通信工程专业英语课文翻译
Technology of Modern Communication
Text A: Bluetooth
Bluetooth wireless technology is a short-range communications technology intended to replace the cables connecting portable（轻便的）and fixed devices while maintaining high levels of security.The key features of Bluetooth technology are robustness（稳健）, low power, and low cost .The Bluetooth specification defines a uniform structure for a wide range of devices to connect and communicate with each other.
蓝牙无线技术是一种小范围无线通信技术，旨在保持高安全级的基础上，在便携式设备与固定设备之间实现无线连接。蓝牙技术的主要特点是稳健，低功耗和低成本。蓝牙规范定义了一个统一的结构，适用范围广的设备连接并相互沟通。
Bluetooth technology has achieved global acceptance such that any Bluetooth enable device, almost everywhere in the world, can connect to other Bluetooth enabled devices in proximity. Bluetooth enabled electronic devices connect and communicate wirelessly through short-range, ad hoc（特别）networks known as piconets Each device can simultaneously communicate with up to seven other devices within a single piconet. Each device can also belong to several piconets simultaneously. Piconets are established dynamically and automatically as Bluetooth enabled devices enter and leave radio proximity.
蓝牙技术已取得全球认可，使得任何支持蓝牙的设备，几乎在世界各地，可以连接到其他支
持蓝牙的邻近装置。蓝牙功能的电子设备连接并通过短距离无线通信，特别网络，被称为微微网。每个设备可以同时在一个单一的微微网最多七个其他设备进行通信。每个设备也可以同时属于几个微微网。微网是动态和自动建立蓝牙功能的设备进入和离开无线电近炸。
A fundamental Bluetooth wireless technology strength is the ability to simultaneously handle both data and voice transmissions .This enables users to enjoy variety of innovative solutions such as a hands-free headset （耳机）for voice calls, printing and fax capabilities, and synchronizing PDA , laptop, and mobile phone applications to name a few.
一个基本的蓝牙无线技术的力量是同时处理数据和语音传输的能力，这使得用户可以享受各种创新的解决方案，如免提耳机进行语音通话，打印和传真功能，并同步PDA，笔记本电脑，以及手机应用仅举几例。
Core system
The Bluetooth core system, defined by Bluetooth specification, is a common service layer protocol which covers four lower layers in seven layer protocol. Service Discovery Protocol (SDP) and the overall profile requirements are defined by Generic Access Profile (GAP) A complete Bluetooth application requires a number of additional services and higher layer protocols that are defined in the Bluetooth specification
核心系统
蓝牙核心系统，通过蓝牙规范中定义的，是一种常见的服务层协议，它包括在7层协议
四个较低层。服务发现协议（SDP）和整体轮廓的要求是由通用访问模式（GAP）定义一个完整的蓝牙应用程序需要的一定数量的在蓝牙规范中定义额外的服务和更高层协议。
The lowest three layers are sometimes grouped into a subsystem known as the Bluetooth controller（蓝牙控制器）. This is a common implementation involving a standard physical communications interface（通信接口）between the Bluetooth controller and remainder of the Bluetooth system including thdeL2CAP,service layers and higher layers （known as the Bluetooth host）. Although this interface is optional ,the architecture is designed to allow for its existence and characteristics .The Bluetooth specification enable interoperability between independent Bluetooth enabled systems by defining the protocol messages exchanged between equivalent layers ,and also interoperability between independent Bluetooth sub-systems by defining a common interface between Bluetooth controllers and Bluetooth hosts.
最低的3层有时被分为称为蓝牙控制器的子系统。这是一个常见的实现涉及到蓝牙控制器和蓝牙系统，包括thdeL2CAP ，服务层和更高的层（被称为蓝牙主机）的其余部分之间的物理标准通信接口。虽然这个接口是可选的，该架构的设计允许它的存在和特性。蓝牙规范定义的协议报文交换的对等层之间实现互操作性（互用性，协同工作的能力）的独立蓝牙系统之间，也通过定义蓝牙控制器和蓝牙主机之间的通用接口独立的蓝牙子系统之间的互操作性。
A number of functional blocks are shown and the path of services and data between these. The functional blocks shown in the diagram are informative; in
general the Bluetooth specification does not define the details of implementation except where this is required for interoperability.
若干功能模块被示出并在它们之间的服务和数据的路径。在图中所示的功能块是信息;在一般的蓝牙规范没有定义实现的细节除非这是必需的互操作性。
Standard interactions are defined for all inter-device operation, where Bluetooth devices exchange protocol signaling according to the Bluetooth specification. The Bluetooth core system protocols are the radio (RF（射频) protocol , link control (LC) protocol, link manager (LM) protocol and logical link control and adaptation protocol (L2CAP), all of which are fully defined in subsequent parts of the Bluetooth specification. In addition, the service discovery protocol (SDP) is a service layer protocol required by all Bluetooth applications.
标准的交互定义的所有设备间的操作，根据蓝牙规范，其中的蓝牙设备交换协议信令。蓝牙核心系统协议是无线电（RF（射频））协议，链路控制（LC）协议，链路管理器（LM）协议和逻辑链路控制和适配协议（L2CAP），所有这些在以后的部分被完全定义蓝牙规范。此外，该服务发现协议（SDP）是由所有的蓝牙应用所需的服务层协议。
The Bluetooth core system offers services through a number of service access points that are shown in the diagram as ellipses（椭圆）. These services consist of the basic primitives that control the Bluetooth core system. The services can be split into three types. There are device control services that modify the behavior and modes of a Bluetooth device, transport control services that create, modify and
release traffic bears（搬运者，载体）(channels and links), and data services that are used to submit data for transmission over traffic bearers.It is common to consider the first two as belong to the C-plane and the last as belong to the U-plane.
蓝牙核心系统提供服务通过一些被图中所示为椭圆形服务访问点。这些服务包括用于控制蓝牙核心系统的基本原语。该服务可以分为三种类型：修改蓝牙设备的行为和模式，设备控制服务，创造交通管制服务，修改和释放的搬运者（信道和链路），数据服务通过交通搬运者用于提交数据传输的.它是常见的首先要考虑的两成属于C面，最后为属于U平面。
A service interface to the Bluetooth controller sub-system is defined such that the Bluetooth controller may be considered a standard part. In this configuration the Bluetooth controller operates the lowest three layers and the L2CAP layer is contained with the rest of the Bluetooth application in a host system. The standard interface is called the host to controller interface (HCI). Implication of this standard service interface is optional.
服务接口到蓝牙控制器子系统被定义，使得所述蓝牙控制器可以被认为是标准的一部分。在此配置蓝牙控制器运行的最低三层和L2CAP层包含与蓝牙应用程序的其余部分在一个主机系统。标准的接口称为主机控制器接口（HCI）（主机控制接口）。言下之意这个标准的服务接口是可选的。
As the Bluetooth architecture is defined with the possibility of a separate host and controller communicating through an HCI, a number of general assumptions are made. The Bluetooth controller is assumed to have limited data buffering
capabilities in comparison with the host. Therefore the L2CAP layer is expected to carry out some simple resource management when submitting L2CAP PDUs （Protocol Data Unit to the controller for transport to a peer device. This includes segmentation of L2CAP SDUs into more manageable PDUs and then the fragmentation of PDUs into start and continuation packets of a size suitable for the controller buffers, and management of the use of controller buffers to ensure availability for channels with quality of service (QoS) commitments.
作为蓝牙架构中定义了一个单独的主机和控制器通过HCI通信的可能性，一些一般假定。假定蓝牙控制器具有有限的数据缓冲能力与主机相比。因此，预计L2CAP层进行一些简单的资源管理提交的L2CAP PDU（协议数据单元协议数据单元）的控制器传输到对端（对等的）设备时。这包括分割L2CAP SDU的分成更容易管理的PDU和PDU的再破碎成适合的控制器缓冲区大小的开始和延续的数据包，并使用控制缓冲区的管理，以确保可用性通道，服务质量（QoS ）承诺。
The baseband layer provides the basic ARQ protocol（（Auto Repeat Request））in Bluetooth technology. The L2CAP layer can optionally provide a further error detection and retransmission to the L2CAP PDUs. This feature is recommended for applications with requirements for a low probability of undetected errors in the user data. A further optional feature of L2CAP is a window-based flow control that can be used to buffer allocation in the receiving device. Both of these optional features augment the QoS performance in certain scenarios.
基带层提供基本的ARQ协议（自动重传请求协议）蓝牙技术。L2CAP层可以选择性地提供进一步的错误检测和重发来的L2CAP的PDU。该功能被推荐用于对未检测到错误，在用户数据的概率低要求的应用程序。L2CAP的又一可选特征在于，可用于在接收设备中缓冲区分配一个基于窗口的流量控制。这两个可选功能增强在某些情况下的QoS性能Although these assumptions may not be required for embedded Bluetooth technology implementations that combine all layers in a single system, the general architectural and QoS models are defined with these assumptions in mind, in effect a lowest common denominator
虽然可能不需要的嵌入式蓝牙技术实现，将所有图层在一个系统中这些假设，一般的建筑和QoS模型定义与这些假设一点，实际上是一个最小的共同特性
Automated conformance testing（符合性检测）of implementations of the Bluetooth core system is required. This is achieved by allowing the tester to control the implementation through the RF interface, which is common to all Bluetooth system, and through the test control interface (TCI)）, which is only required for conformance testing.
蓝牙核心系统实现自动化的一致性测试是必需的。这是通过允许测试仪（试验者），通过RF 接口，这是通用于所有蓝牙系统，并通过测试控制接口，这是唯一需要的一致性测试，以控制方面取得。
The tester uses exchanges with the implementation under test (ITU) through the RF interface to ensure the correct responses to requests from remote devices. The
tester controls the IUT through the TCI to cause the ITU to originate exchanges through the RF interface so that these can also be verified as conformant.
该测试仪采用交流下，通过RF接口测试（ITU）的实施，确保从远程设备的请求的正确响应。测试仪控制IUT通过TCI使国际电联通过RF接口发起交换，使这些物质也可以作为符合性验证。
The TCI uses a different command-set (service interface) for the testing of each architectural layer and protocol. A subset of the HCI command-set issued（发行）as the TCI service interface for each of the layers and protocols within the Bluetooth controller subsystem. A separate service interface is used for testing the L2CAP layer and protocol. As an L2CAP service interface is not defined in the Bluetooth core specification it is defined separately in the TCI specification. Implementation of the L2CAP service interface is only required for conformance testing.
TCI使用不同的命令集（服务接口）为每个架构层和协议的测试。发出的HCI命令集作为TCI服务接口为每个蓝牙控制器子系统内的层和协议的一个子集。一个单独的服务接口是用于测试的L2CAP层和协议。作为一个L2CAP服务接口未在蓝牙核心规范中定义它是在TCI 规范分别定义的。只需要进行一致性测试的L2CAP服务接口的实现。
Why choose Bluetooth wireless technology
Bluetooth wireless technology is the simple choice for convenient, wire free, and short-range communication between devices. It is a globally available standard that wirelessly connects mobile phones, portable computers, cars, stereo headsets, MP3
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第二章第一篇 To say that we live in an age of electronics is an understatement. From the omnipresent integrated circuit to the equally omnipresent digital computer, we encounter electronic devices and systems on a daily basis. In every aspect of our increasingly technological society— whether it is science, engineering, medicine, music, maintenance, or even espionage—the role of electronics is large, and it is growing. 谈论关于我们生活在一个电子学时代的论调是一种空泛的论调。从无处不在的集成电路到同样无处不在的数字计算机，我们在日常活动中总会遇到电子设备和电子系统。在我们日益发展的科技社会的方方面面——无论是在科学、工程、医药、音乐、维修方面甚至是在谍报方面——电子学的作用是巨大的，而且还将不断增强。 In general, all of the tasks with which we shall be concerned can be classified as "signal-processing“tasks. Let us explore the meaning of this term 一般说来，我们将要涉及到的工作被归结为“信号——处理”工作，让我们来探究这个术语的含义吧。 A signal is any physical variable whose magnitude or variation with time contains information. This information might involve speech and music, as in radio broadcasting, a physical quantity such as the temperature of the air in a room, or numerical data, such as the record of stock market transactions. The physical variables that can carry information in an electrical system are voltage and current. When we speak of "signals", therefore, we refer implicitly to voltages or currents. However, most of the concepts we discuss can be applied directly to systems with different information-carrying variables. Thus, the behavior of a mechanical system (in which force and velocity are the variables) or a hydraulic system (in which pressure and flow rate are the variables) can often be modeled or represented by an equivalent electrical system. An understanding of the behavior of electrical systems, therefore, provides a basis for understanding a much broader range of phenomena. 信号就是其与时间有关的量值或变化包含信息的任何物理变量。这种信息或许像无线电广播的演讲和音乐，或许是像室内温度的物理量，或许像股市交易记录的数字数据。在电气系统中能够载有信息的物理变量是电压和电流。因此当我们谈到“信号”，我们不言而喻指的是电压和电流，然而，我们要讨论的大多数概念是可以被直接应用于载有不同信息的变量的系统，因此，一个机械系统（在这个系统中力和速度是其变量）或者液压系统（在这个系统中压力和流速是其变量）的性能通常可以用一个等效的电气系统来模拟或表示。因此，我们对于电气系统性能的理解为理解更宽领域的现象打下了一个基础。 A signal can carry information in two different forms. In an analog signal the continuous variation of the voltage or current with time carries the information. An example, in Fig.2-l, is the voltage produced by a thermocouple pair when the two junctions are at different temperatures. As the temperature difference between the two junctions varies, the magnitude of the voltage across the thermocouple pair also varies. The voltage thus provides an analog representation of the temperature difference. 一个信号可以以两种形式来承载信息。在一个模拟信号中电压或电流随时间而产生的连续变化载有信息。在图2-1中，当一对热电偶的接头处于不同的温度时由热电偶所产生的电压就是一个例子。当两个接头之间的温度差改变时，一对热电偶两端的电压也将改变。于是电压就提供了温度差的模拟表现形式 The other kind of signal is a digital signal. A digital signal is one that can take on values within two discrete ranges. Such signals are used to represent ON-OFF or YES-NO information. An ordinary household thermostat delivers a digital signal tocontrol the furnace. When the
大学英语精读1课文翻译
大学英语精读1课文翻译 Unit1 Some Strategies or Learning English 学习英语绝非易事。它需要刻苦和长期努力。 虽然不经过持续的刻苦努力便不能期望精通英语，然而还是有各种有用的学习策略可以用来使这一任务变得容易一些。以下便是其中的几种。 1. 不要以完全同样的方式对待所有的生词。你可曾因为简直无法记住所学的所有生词而抱怨自己的记忆力太差？其实，责任并不在你的记忆力。如果你一下子把太多的生词塞进头脑，必定有一些生词会被挤出来。你需要做的是根据生词日常使用的频率以不同的方式对待它们。积极词汇需要经常练习，有用的词汇必须牢记，而在日常情况下不常出现的词只需见到时认识即可。你会发现把注意力集中于积极有用的词上是扩大词汇量最有效的途径。 2．密切注意地道的表达方式。你可曾纳闷过，为什么我们说 "我对英语感兴趣"是"I'm interested in English"，而说"我精于法语"则是"I'm good at French"？你可曾问过自己，为什么以英语为母语的人说"获悉消息或秘密"是"learn the news or secret"，而"获悉某人的成功或到来"却是"learn of someone's success or arrival"？这些都是惯用法的例子。在学习英语时，你不仅必须注意词义，还必须注意以英语为母语的人在日常生活中如何使用它。 3．每天听英语。经常听英语不仅会提高你的听力，而且有助你培养说的技能。除了专为课程准备的语言磁带外，你还可以听英语广播，看英语电视和英语电影。第一次听录好音的英语对话或语段，你也许不能听懂很多。先试着听懂大意，然后再反复地听。你会发现每次重复都会听懂更多的东西。 4．抓住机会说。的确，在学校里必须用英语进行交流的场合并不多，但你还是可以找到练习讲英语的机会。例如，跟你的同班同学进行交谈可能就是得到一些练习的一种轻松愉快的方式。还可以找校园里以英语为母语的人跟他们随意交谈。或许练习讲英语最容易的方式是高声朗读，因为这在任何时间，任何地方，不需要搭档就可以做到。例如，你可以看着图片或身边的物件，试着对它们详加描述。你还可以复述日常情景。在商店里购物或在餐馆里吃完饭付过账后，假装这一切都发生在一个讲英语的国家，试着用英语把它表演出来。
《化学工程与工艺专业英语》课文翻译 完整版
Unit 1 Chemical Industry 化学工业 1.Origins of the Chemical Industry Although the use of chemicals dates back to the ancient civilizations, the evolution of what we know as the modern chemical industry started much more recently. It may be considered to have begun during the Industrial Revolution, about 1800, and developed to provide chemicals roe use by other industries. Examples are alkali for soapmaking, bleaching powder for cotton, and silica and sodium carbonate for glassmaking. It will be noted that these are all inorganic chemicals. The organic chemicals industry started in the 1860s with the exploitation of William Henry Perkin‘s discovery if the first synthetic dyestuff—mauve. At the start of the twentieth century the emphasis on research on the applied aspects of chemistry in Germany had paid off handsomely, and by 1914 had resulted in the German chemical industry having 75% of the world market in chemicals. This was based on the discovery of new dyestuffs plus the development of both the contact process for sulphuric acid and the Haber process for ammonia. The later required a major technological breakthrough that of being able to carry out chemical reactions under conditions of very high pressure for the first time. The experience gained with this was to stand Germany in good stead, particularly with the rapidly increased demand for nitrogen-based compounds (ammonium salts for fertilizers and nitric acid for explosives manufacture) with the outbreak of world warⅠin 1914. This initiated profound changes which continued during the inter-war years (1918-1939). 1．化学工业的起源 尽管化学品的使用可以追溯到古代文明时代，我们所谓的现代化学工业的发展却是非常近代（才开始的）。可以认为它起源于工业革命其间，大约在1800年，并发展成为为其它工业部门提供化学原料的产业。比如制肥皂所用的碱，棉布生产所用的漂白粉，玻璃制造业所用的硅及Na2CO3. 我们会注意到所有这些都是无机物。有机化学工业的开始是在十九世纪六十年代以William Henry Perkin 发现第一种合成染料—苯胺紫并加以开发利用为标志的。20世纪初，德国花费大量资金用于实用化学方面的重点研究，到1914年，德国的化学工业在世界化学产品市场上占有75%的份额。这要归因于新染料的发现以及硫酸的接触法生产和氨的哈伯生产工艺的发展。而后者需要较大的技术突破使得化学反应第一次可以在非常高的压力条件下进行。这方面所取得的成绩对德国很有帮助。特别是由于1914年第一次世界大仗的爆发，对以氮为基础的化合物的需求飞速增长。这种深刻的改变一直持续到战后（1918-1939）。 date bake to/from: 回溯到 dated: 过时的，陈旧的 stand sb. in good stead: 对。。。很有帮助
电气工程及其自动化专业英语第五章课文翻译
Most people can formulate a mental picture of a computer, but computers do so many things and come in such a variety of shapes and sizes that it might seem difficult to distill their common characteristics into an all-purpose definition. At its core, a computer is a device that accepts input, processes data, stores data, and produces output, all according to a series of stored instructions. Computer input is whatever is put into a computer system. Input can be supplied by a person, by the environment, or by another computer. Examples of the kinds of input that a computer can accept include the words and symbols in a document, numbers for a calculation, pictures, temperatures from a thermostat, audio signals from a microphone, and instructions from a computer program. An input device, such as a keyboard or mouse, gathers input and transforms it into a series of electronic signals for the computer. In the context of computing, data refers to the symbols that represent facts, objects, and ideas. Computers manipulate data in many ways, and we call this manipulation processing. The series of instructions that tell a computer how to carry out processing tasks is referred to as a computer program, or simply a "program." These programs form the software that sets up a computer to do a specific task. In a computer, most processing takes place in a component called the central processing unit (CPU), which is sometimes described as the"brain" of the computer. A computer stores data so that it will be available for processing. Most computers have more than one location for storing data, depending on how the data is being used. Memory is an area of a computer that temporarily holds data that is waiting to be processed, stored, or output. Storage is the area where data can be left on a permanent basis when it is not immediately needed for processing. Output is the results produced by a computer. Some examples of computer output include reports, documents, music, graphs, and pictures. An output device displays, prints, or transmits the results of processing. Computers are versatile machines, which are able to perform a truly amazing assortment of tasks, but some types of computer are better suited to certain tasks than other types of computers. Computers can be categorized as personal computer, handheld computers, workstations, mainframes, supercomputers , and servers. 大多数人可以制订一个电脑精神的图片，但电脑做很多事情，出现这样的形状和大小不同，它似乎难以提炼成一个全能的定义，它们的共同特点。在其核心，一台计算机是一种装置，它接受输入，处理数据，存储数据，并产生输出，根据对所有存储一系列指示。 什么是计算机输入到计算机系统的压力。输入可提供的一人，由环境，或由另一台计算机。对输入的各种例子，一个计算机可以接受包括文字和符号的文件，规定计算，图片，从恒温器的温度数字，音频信号从一个麦克风，从电脑程序指令。一个输入设备，如键盘或鼠标，集输和转换成一个电子信号的计算机的一系列。 在计算中，数据是指以符号代表的事实，对象和想法。计算机操作在很多方面的数据，我们称之为操作处理。一系列的指令，告诉计算机如何进行处理任务，被称为一个计算机程序，或只是一个“程序”。这些方案形成了软件，建立了计算机做特定的任务。在计算机中，大部分处理发生在一个组件的地方称为中央处理单元（CPU），有时为“大脑的计算机”来形容。 计算机存储数据，以便它会被用作处理可用。大多数计算机有多个用于存储数据的位置，这取决于数据如何被使用。内存是计算机的一个领域，数据是暂时持有等待处理，存储或输出。在数据存储，是可以在一个地区长期离开时，没有立即处理所需。 输出是由电脑产生的结果。电脑输出的一些例子包括报告，文件，音乐，图形，图片。输出设备显示，打印，或传送的处理结果。 电脑是多功能机，它能够执行各种各样的任务十分惊人，但某些类型的计算机更适合比其他类型的计算机的某些任务。计算机可以被归类为个人电脑，掌上电脑，工作站，大型机，超级计算机和服务器。
[实用参考]大学英语精读第三版第四册课文及课文翻译.doc
Unit1 Twocollege-ageboPs,unawarethatmakingmonePusuallPinvolveshardwork,aretemptedbPanadvertis ementthatpromisesthemaneasPwaPtoearnalotofmoneP.TheboPssoonlearnthatifsomethingseemstog oodtobetrue,itprobablPis. 一个大学男孩，不清楚赚钱需要付出艰苦的劳动，被一份许诺轻松赚大钱的广告吸引了。男孩们很快就明白，如果事情看起来好得不像真的，那多半确实不是真的。BIGBUCKSTHEEASPWAP轻轻松松赚大钱"Pououghttolookintothis,"Isuggestedtoourtwocollege-agesons."ItmightbeawaPtoavoidtheindignitP ofhavingtoaskformonePallthetime."Ihandedthemsomemagazinesinaplasticbagsomeonebadhungon ourdoorknob.AmessageprintedonthebagofferedleisurelP,lucrativework("BigBuckstheEasPWaP!")o fdeliveringmoresuchbags. “你们该看看这个，”我向我们的两个读大学的儿子建议道。“你们若想避免因为老是向人讨钱而有失尊严的话，这兴许是一种办法。”我将挂在我们门把手上的、装在一个塑料袋里的几本杂志拿给他们。塑料袋上印着一条信息说，需要招聘人投递这样的袋子，这活儿既轻松又赚钱。（“轻轻松松赚大钱!”） "Idon'tmindtheindignitP,"theolderoneanswered.“我不在乎失不失尊严，”大儿子回答说。"Icanlivewithit,"hisbrotheragreed.“我可以忍受，”他的弟弟附和道。"Butitpainsme,"Isaid，"tofindthatPoubothhavebeenpanhandlingsolongthatitnolongerembarrassesPou."“看到你们俩伸手讨钱讨惯了一点也不感到尴尬的样子，真使我痛心，”我说。TheboPssaidthePwouldlookintothemagazine-deliverPthing.Pleased,Ilefttownonabusinesstrip.BPmi dnightIwascomfortablPsettledinahotelroomfarfromhome.Thephonerang.ItwasmPwife.Shewantedt oknowhowmPdaPhadgone.孩子们说他们可以考虑考虑投递杂志的事。我听了很高兴，便离城出差去了。午夜时分，我已远离家门，在一家旅馆的房间里舒舒服服住了下来。电话铃响了，是妻子打来的。她想知道我这一天过得可好。 "Great!"Ienthused."HowwasPourdaP?"Iinquired.“好极了!”我兴高采烈地说。“你过得怎么样?”我问道。 "Super!"Shesnapped."Justsuper!Andit'sonlPgettingstarted.Anothertruckjustpulledupoutfront."“棒极了!”她大声挖苦道。“真棒!而且这还仅仅是个开始。又一辆卡车刚在门前停下。”"Anothertruck?"“又一辆卡车?” "Thethirdonethisevening.ThefirstdeliveredfourthousandMontgomerPWards.Thesecondbroughtfour thousandSears,Roebucks.Idon'tknowwhatthisonehas,butI'msureitwillbefourthousandofsomething.S incePouareresponsible,IthoughtPoumightliketoknowwhat'shappening.“今晚第三辆了。第一辆运来了四千份蒙哥马利-沃德百货公司的广告；第二辆运来四千份西尔斯-罗伯克百货公司的广告。我不知道这一辆装的啥，但我肯定又是四千份什么的。既然这事是你促成的，我想你或许想了解事情的进展。” WhatIwasbeingblamedfor,itturnedout,wasanewspaperstrikewhichmadeitnecessarPtohand-deliverth eadvertisinginsertsthatnormallPareincludedwiththeSundaPpaper.ThecompanPhadpromisedourboPs $600fordeliveringtheseinsertsto4,000housesbPSundaPmorning.我之所以受到指责，事情原来是这样：由于发生了一起报业工人罢工，通常夹在星期日报纸里的广告插页，必须派人直接投送出去。公司答应给我们的孩子六百美金，任务是将这些广告插页在星期天早晨之前投递到四千户人家去。 "Pieceofcake!"ouroldercollegesonhadshouted.“不费吹灰之力!”我们上大学的大儿子嚷道。"SiGhundredbucks!"Hisbrotherhadechoed,"Andwecandothejobintwohours!"“六百块!”他的弟弟应声道，“我们两个钟点就能干完!” "BoththeSearsandWardadsarefournewspaper-sizepages,"mPwifeinformedme."TherearethirtP-twot housandpagesofadvertisingonourporch.Evenaswespeak,twobigguPsarecarrPingarmloadsofpaperup thewalk.Whatdowedoaboutallthis?"“西尔斯和沃德的广告通常都是报纸那么大的四页，”妻子告诉我说，“现在我们门廊上堆着三万二千页广告。就在我们说话的当儿，两个大个子正各抱着一大捆广告走过来。这么多广告，我们可怎么办?”"JusttelltheboPstogetbusP,"Iinstructed."TheP'recollegemen.TheP'lldowhatthePhavetodo."“你让孩子们快干，”我指示说。“他们都是大学生了。他们自己的事得由他们自己去做。”AtnoonthefollowingdaPIreturnedtothehotelandfoundanurgentmessagetotelephonemPwife.Hervoic
汽车专业英语翻译
About car engine Of all automobile components,an automobile engie is the most complicated assembly with dominant effects on the function of an autombile.So, the engine is generally called the"heat"of an automobile. 在汽车的所有部件中，汽车发动机是最复杂的组件，其对整车性能有着决定性的作用。因而发动机往往被称作发动机的“心脏”。 There are actually various types of engines such as electric motors,stream engines,andinternal combustion engines.The internal combustion engines seem to have almost complete dominance of the automotive field.The internal combustion engine,as its name indicates,burns fuel within the cylinders and converts the expanding force of the combustion into rotary force used to propel the vehicle. 事实上，按动力来源分发动机有很多种，如电动机、蒸汽机、外燃机等。然而内燃机似乎在发动机领域有着绝对的统治地位。就像其字面意思一样，内燃机的染料在气缸内燃烧，通过将燃烧产生气体的膨胀力转换成转动力来驱动发动机前进。 Engine is the power source of the automobile.Power is produced by the linear motion of a piston in a cylinder.However,this linear motion must be changed into rotary motion to turn the wheels of cars or trucks.The puston attached to the top of a connecting rod by a pin,called a piston pin or wrist pin.The bottom of the connecting rod is attached to the crankshaft.The connecting rod transmits the up-and-down motion of the piston to the crankshaft,which changes it into rotary motion.The connecting rod is mounted on the crankshaft with large bearings called rod bearing.Similar bearings, called main bearings,are used to mount the crankshaft in the block. 发动机是整部车的动力来源。能量来自于活塞在气缸内的（往复）直线运动。然而这种（往复）直线运动必须要转换成旋转运动才能驱动车轮。活塞与连杆通过一个销来连接，这个销称为活塞销。连杆的下部连接于曲拐。连杆把活塞的上下往复运动传递给曲拐，从而将往复直线运动转变成旋转运动。连杆和曲拐的连接使用大的轴承，称之为连杆轴承，类似的轴承也用于将曲轴连接到机体，称之为主轴承。 They are generally two different types of cooling system:water-cooling system and air-cooling system.Water-cooling system is more common.The cooling medium, or coolant, in them is either water or some low-freezing liquid, called antifreeze.A water-cooling system consists of the engine water jacket, thermostat, water pump, radiator, radiator cap, fan, fan drive belt and neccessary hoses. 主要有两种类型的冷却系统：水冷和风冷。水冷系统更为普遍。系统所用冷却介质或是冷却液常委水或其他低凝固点液体，称为抗凝剂。一个完整的水冷系统包括机体水套，节温器，水泵，散热器，散热器罩，风扇，风扇驱动皮带和必需的水管。 A water-cooling system means that water is used as a cooling agent to circulate through the engine to absorb the heat and carry it to the radiator for disposal.The ebgine is cooled mainly through heat transfer and heat dissipation.The heat generated by the mixture burned in the engine must be transferred from the iron or aluminum cylinder to the waterin the water jacket.The outside of the water jacket dissipates some of the heat to the air surrounding it, but most of the heat is carried by the cooling water to the radiator for dissipation.When the coolant temperature in the system reaches 90°,the termostat valve open fully, its slanted edge shutting off