翻译练练手0915

翻译练练手0915
翻译练练手0915

一、汉译英

1、请将下面文字翻译成英文:

现有的文献对于节能潜力的研究多着眼于预测,有效能源投入及节能潜力的研究较少,且比较笼统。目前尚未发现专门研究中国火电行业节能的文献,本文试图对这一问题进行分析。通过随机前沿(SFA)模型,讨论中国火电行业的节能潜力及影响因素。研究结果发现2005年—2010年,我国火电行业的平均能源投入效率约为0.85,并在短暂的改善之后开始下降,导致这一现象的主要非效率因素是对外开放程度的降低;一些相对落后的内陆城市通过改进非效率因素能够实现的火电行业节能潜力较大;华东电网的平均能源投入效率是目前最高的;为了实现火电行业的节能,最终的政策手段是要实现电力行业的市场化改革,打破国有垄断,引进民资。

For energy conservation potential research in the existing literature, more focus on the prediction, and less on the effective energy input and energy conservation potential which emphasizes on the general research. The literatures on the energy conservation in thermal power generation industry have been limited. To fill the gap, this paper uses Stochastic Frontier Analysis (SFA) to investigate the energy conservation potential in thermal power generation industry and its influence factors. It is found that the average efficiency of energy input in China's thermal power industry is about 85 percent efficient, which has been decreased after temporary improvement. The decreasing of opening degree is the major inefficient factor behind the phenomenon. For some undeveloped interior cities, there is huge potential to achieve the goal of energy conservation by ameliorating the inefficient factors. East China power grid is the most efficient one at present in the average efficiency of energy input. In order to fulfil the energy conservation in thermal power generation industry, the final policy means should be realized by deregulating the electricity industry, breaking the state-ownership monopoly and bringing private capital.

2.请将下面文字翻译成英文

2014年5月21日,俄罗斯与中国签署了30年天然气购销合同,总价值4000亿美元。外界对中俄合作给予的关注,更大的落脚点在于中俄互相之间的迫切需求。中俄天然气供应

协议的签署,意味着中俄两国在石油、煤炭、电力等能源领域将展开全面的合作。

Russia has been contracted to transport natural gas equivalent of $4000 billion to China for 30 years on May 21th, 2015. The active demand for China and Russia was in the spotlight. Sealing of natural gas purchase and sales contracts announce the two countries have conducted comprehensive cooperation in the oil, coal and power.

俄罗斯拥有丰富的能源资源,其天然气国际贸易量全球第一,石油和石油产品的出口居世界第二。俄罗斯目前有着强烈的出售天然气的意愿。由于美国页岩气革命的出现,俄罗斯在欧洲的市场份额不断被挤压。此外,国内经济增速的低预期,以及乌克兰局势的不稳定,也让俄罗斯着手寻求新市场的压力再次加大。能源出口额占俄罗斯出口总额的70%。天然气在欧洲市场份额的不断萎缩,迫使俄罗斯急需找到一个强大的市场,而最明显、潜力最大的能源市场是中国。可以说不断成长中的亚洲国家,特别是中国和印度,应该是俄罗斯未来能源的新兴市场。

Russia is rich in various energy resources, which has the largest international trade volume of natural gas and the world's second-largest oil and oil products exports. Russia has a strong will to sale natural gas. Along with the shale gas revolution in the United States, its market shares in Europe were squeezed, even as domestic economic growth slows and the decline in Ukraine's stability, which all lead to the gradual increase of pressure to seek new markets. Energy exports account for 70% of Russia's total export sales. The declining Russia share of the total European market forces Russia to find a strong market, and it is found that China is the most potential market. That is to say, those growing Asian countries, especially China and India, will be the emerging market for Russia.

中俄的能源合作有利于保障我国的能源安全。由于现阶段中国经济发展对能源需求有很强的依赖性,中国的能源安全问题也是中国经济的可持续发展问题。宏观层面上,中国的能源安全主要包括两方面的含义:一是能源供给是否存在中断的风险;二是能源价格是否会大幅波动的风险。

Energy cooperation between China and Russia will help to ensure the safe of sources. At the present stage of economic development, China has increasing demand and dependence on energy. Chinese energy security has become important subject to the sustainable economic development. On a macro level, Chinese energy security

consists of two aspects: risk of energy supply disruption and drastic fluctuation of energy prices.

二.论文修改:请根据你的理解,用“修订”的处理方法修改下面这段文字

1. Facing the increasing pressure on energy supply, it is clearly stated in China’s 12th five year Energy Strategic Planning that the C hina’s energy strategy will be transmitted from ensuring the supply to controlling the total consumption. As an important part of energy, at the same time as the main primary energy-consuming sector, electric power has become more and more important in low-carbon economy. “Apparently, development of electric power is closely related with total energy consumption control.”(Lin Boqiang ,2012).

The thermal power industry which generates 80% of the whole electric power is also the major coal-consuming sector in China. Therefore, the energy–saving potential of thermal power industry will be related to both the feasibility of the control on total energy consumption and the implementation of energy independence and energy balance in China. Coal makes up about 70% in primary energy consumption, 50% of which was devoted into thermal power industry. Compared with other energy sources, coal, which is abundant and cheap enough in China, occupies a dominant part of demand in the country. Under the background of energy conservation, emission reduction, low carbon development and the development bottleneck of energy resource are becoming more and more prominent. With the economic growth mode urgently needs to be changed, it is imminent to reduce the proportion of coal in energy consumption structure.

2. Abstract: China is in a phase of rapid economics growth on industrialization and urbanization. With the further rapid growth in the next 20 years, China will enter a rigid demand for energy. Energy saving will become an important strategy on China's low carbon economic transformation. Since 1998, China's chemical fiber production line has become the first place in the world, until 2011, China's chemical fiber production accounts about 70% of the world’s output. So, Energy saving is particularly important for China's chemical fiber industry, it can be an important

contribution to the energy saving of world. In this paper cointegration against China's chemical fiber industry in energy demand to GDP, energy prices, population and the R& D expenditure financed relations were tested, the results show that the energy demand of China's chemical fiber industry with gross domestic product (GDP), energy prices, population and R&D expenditures on significant long-term equilibrium relationship, and based on this, author predicts energy demand of China's chemical fiber industry in 2015 and 2020. And furthermore, the Monte Carlo simulation method is used to verify the reliability of the prediction. Using scenario analysis to predict different energy policy on China's chemical fiber industry, energy demand and energy savings, there is a certain energy space on China's chemical fiber industry. According to the research results, the author gives some suggestion on energy saving policy.

机械手机械设计中英文对照外文翻译文献

(文档含英文原文和中文翻译) 中英文对照翻译 机械设计 摘要: 机器由机械和其他元件组成的用来转换和传输能量的装置。比如:发动机、涡轮机、车、起重机、印刷机、洗衣机和摄影机。许多机械方面设计的原则和方法也同样适用于非机械方面。术语中的“构造设计”的含义比“机

械设计”更加广泛,构造设计包括机械设计。在进行运动分析和结构设计时要把产品的维护和外形也考虑在机械设计中。在机械工程领域中,以及其它工程领域,都需要机械设备,比如:开关、凸轮、阀门、船舶以及搅拌机等。关键词:设计流程设计规则机械设计 设计流程 设计开始之前就要想到机器的实用性,现有的机器需要在耐用性、效率、重量、速度,或者成本上得到改善。新的机器必需能够完全或部分代替以前人的功能,比如计算、装配、维修。 在设计的初级阶段,应该充分发挥设计人员的创意,不要受到任何约束。即使有一些不切实际的想法,也可以在设计的早期,即在绘制图纸之前被改正掉。只有这样,才不致于阻断创新的思路。通常,必须提出几套设计方案,然后进行比较。很有可能在这个计划最后指定使用某些不在计划方案内的一些想法的计划。 一般当产品的外型和组件的尺寸特点已经显现出来的时候,就可以进行全面的设计和分析。接着还要客观的分析机器性能、安全、重量、耐用性,并且成本也要考虑在内。每一个至关重要的部分要优化它的比例和尺寸,同时也要保持与其它组成部分的平衡。 选择原材料和工艺的方法。通过力学原理来分析和实现这些重要的特性,如稳定和反应的能量和摩擦力的利用,动力惯性、加速度、能量;包括材料的弹性强度、应力和刚度等物理特性,以及流体的润滑和驱动器的流体力学。设计的过程是一个反复与合作的过程,无论是正式的还是非正式的,对设计者来说每个阶段都很重要。。产品设计需要大量的研究和提升。许多的想法,必须通过努力去研究成为一种理念,然后去使用或放弃。虽然每个工

机器人外文翻译

英文原文出自《Advanced Technology Libraries》2008年第5期 Robot Robot is a type of mechantronics equipment which synthesizes the last research achievement of engine and precision engine, micro-electronics and computer, automation control and drive, sensor and message dispose and artificial intelligence and so on. With the development of economic and the demand for automation control, robot technology is developed quickly and all types of the robots products are come into being. The practicality use of robot products not only solves the problems which are difficult to operate for human being, but also advances the industrial automation program. At present, the research and development of robot involves several kinds of technology and the robot system configuration is so complex that the cost at large is high which to a certain extent limit the robot abroad use. To development economic practicality and high reliability robot system will be value to robot social application and economy development. With the rapid progress with the control economy and expanding of the modern cities, the let of sewage is increasing quickly: With the development of modern technology and the enhancement of consciousness about environment reserve, more and more people realized the importance and urgent of sewage disposal. Active bacteria method is an effective technique for sewage disposal,The lacunaris plastic is an effective basement for active bacteria adhesion for sewage disposal. The abundance requirement for lacunaris plastic makes it is a consequent for the plastic producing with automation and high productivity. Therefore, it is very necessary to design a manipulator that can automatically fulfill the plastic holding. With the analysis of the problems in the design of the plastic holding manipulator and synthesizing the robot research and development condition in recent years, a economic scheme is concluded on the basis of the analysis of mechanical configuration, transform system, drive device and control system and guided by the idea of the characteristic and complex of mechanical configuration,

外文翻译机械手

Hand Column Type Power Machine Follow with our country the rapid development of industrial production, rapidly enhance level of automation, implementation artifacts of handling, steering, transmission or toil for welding gun, spraing gun, spanner and other tools for processing, assembly operations for example automation, should cause the attention of people more and more. Industrial robot is an important branch of industrial robots. It features can be programmed to perform tasks in a variety of expectations, in both structure and performance advantages of their own people and machines, in particular, reflects the people's intelligence and adaptability. The accuracy of robot operations and a variety of environments the ability to complete the work in the field of national economy and there are broad prospects for development. With the development of industrial automation, there has been CNCmachining center, it is in reducing labor intensity, while greatly improved labor productivity. However, the upper and lower commonin CNCmachining processes material, usually still use manual or traditional relay-controlled semi-automatic device. The former time-consuming and labor intensive, inefficient; the latter due to design complexity, require more relays, wiring complexity, vulnerability to body vibration interference, while the existence of poor reliability, fault more maintenance problems and other issues. Programmable Logic Controller PLC-controlled robot control system for materials up and down movement is simple, circuit design is reasonable, with a strong anti-jamming capability, ensuring the system's reliability, reduced maintenance rate, and improve work efficiency. Robot technology related to mechanics, mechanics, electrical hydraulic technology, automatic control technology, sensor technology and computer technology and other fields of science, is a cross-disciplinary integrated technology. Current industrial approaches to robot arm control treat each joint of the robot arm as a simple joint servomechanism. The servomechanism approach models the varying dynamics of a manipulator inadequately because it neglects the motion and configuration of the whole arm mechanism. These changes in the parameters of the controlled system sometimes are significant enough to render conventional feedback control strategies ineffective. The result is reduced servo response speed and damping, limiting the precision and speed of the end-effecter and making it appropriate only for limited-precision tasks. Manipulators controlled in this manner move at slow speeds with unnecessary vibrations. Any significant performance gain in this and other areas of robot arm control require the consideration of more efficient dynamic models, sophisticated control approaches, and the use of dedicated computer architectures and parallel processing techniques. Manipulator institutional form is simple, strong professionalism, only as a loading device for a machine tools, special-purpose manipulator is attached to this machine.

机械手外文翻译 修改版

密级 分类号 编号 成绩 本科生毕业设计 (论文) 外文翻译 原文标题Simple Manipulator And The Control Of It 译文标题简易机械手及控制 作者所在系别机械工程系 作者所在专业xxxxx 作者所在班级xxxxxxxx 作者姓名xxxx 作者学号xxxxxx 指导教师姓名xxxxxx 指导教师职称副教授 完成时间2012 年02 月 北华航天工业学院教务处制

译文标题简易机械手及控制 原文标题 Simple Manipulator And The Control Of It 作者机电之家译名JDZJ国籍中国 原文出处机电之家 中文译文: 简易机械手及控制 随着社会生产不断进步和人们生活节奏不断加快,人们对生产效率也不断提出新要求。由于微电子技术和计算软、硬件技术的迅猛发展和现代控制理论的不断完善,使机械手技术快速发展,其中气动机械手系统由于其介质来源简便以及不污染环境、组件价格低廉、维修方便和系统安全可靠等特点,已渗透到工业领域的各个部门,在工业发展中占有重要地位。本文讲述的气动机械手有气控机械手、XY轴丝杠组、转盘机构、旋转基座等机械部分组成。主要作用是完成机械部件的搬运工作,能放置在各种不同的生产线或物流流水线中,使零件搬运、货物运输更快捷、便利。 一.四轴联动简易机械手的结构及动作过程 机械手结构如下图1所示,有气控机械手(1)、XY轴丝杠组(2)、转盘机构(3)、旋转基座(4)等组成。 图1.机械手结构 其运动控制方式为:(1)由伺服电机驱动可旋转角度为360°的气控机械手(有光电传感器确定起始0点);(2)由步进电机驱动丝杠组件使机械手沿X、Y轴移动(有x、y轴限位开关);(3)可回旋360°的转盘机构能带动机械手及丝杠组自由旋转(其电气拖动部分由直流电动机、光电编码器、接近开关等组成);(4)旋转基座主要支撑以上3部分;(5)气控机械手的张合由气压控制(充气时机械手抓紧,放气时机械手松开)。 其工作过程为:当货物到达时,机械手系统开始动作;步进电机控制开始向下

机械手设计英文参考文献原文翻译

机械手设计英文参考文 献原文翻译 Company number:【WTUT-WT88Y-W8BBGB-BWYTT-19998】

翻译人:王墨墨山东科技大学 文献题目:Automated Calibration of Robot Coordinates for Reconfigurable Assembly Systems 翻译正文如下: 针对可重构装配系统的机器人协调性的自动校准 T.艾利,Y.米达,H.菊地,M.雪松 日本东京大学,机械研究院,精密工程部 摘要 为了实现流水工作线更高的可重构性,以必要设备如机器人的快速插入插出为研究目的。当一种新的设备被装配到流水工作线时,应使其具备校准系统。该研究使用两台电荷耦合摄像机,基于直接线性变换法,致力于研究一种相对位置/相对方位的自动化校准系统。摄像机被随机放置,然后对每一个机械手执行一组动作。通过摄像机检测机械手动作,就能捕捉到两台机器人的相对位置。最佳的结果精度为均方根值毫米。 关键词: 装配,校准,机器人 1 介绍 21世纪新的制造系统需要具备新的生产能力,如可重用性,可拓展性,敏捷性以及可重构性 [1]。系统配置的低成本转变,能够使系统应对可预见的以及不可预见的市场波动。关于组装系统,许多研究者提出了分散的方法来实现可重构性[2][3]。他们中的大多数都是基于主体的系统,主体逐一协同以建立一种新的

配置。然而,协同只是目的的一部分。在现实生产系统中,例如工作空间这类物理问题应当被有效解决。 为了实现更高的可重构性,一些研究人员不顾昂贵的造价,开发出了特殊的均匀单元[4][5][6]。作者为装配单元提出了一种自律分散型机器人系统,包含多样化的传统设备[7][8]。该系统可以从一个系统添加/删除装配设备,亦或是添加/删除装配设备到另一个系统;它通过协同作用,合理地解决了工作空间的冲突问题。我们可以把该功能称为“插入与生产”。 表1:合作所需的调节和量度 在重构过程中,校准的装配机器人是非常重要的。这是因为,需要用它们来测量相关主体的特征,以便在物理主体之间建立良好的协作关系。这一调整必须要达到表1中所列到的多种标准要求。受力单元和方向的调整是不可避免的,以便使良好的协同控制得以实现。从几何标准上看,位置校准是最基本的部分。一般来说,校准被理解为“绝对”,即,关于特定的领域框架;或者“相对”,即,关于另一个机器人的基本框架。后者被称为“机器人之间的校准”。 个体机器人的校准已被广泛研究过了。例如,运动参数的识别就非常受欢迎。然而,很少有对机器人之间校准的研究。玉木等人是用一种基于标记的方法,在一个可重构的装配单元内,校准机器人桌子和移动机械手之间的相互位置/方向联系。波尼兹和夏发表了一种校准方法。该方法通过两个机械手的机械接触来实现,实验非常耗时,并要求特别小心地操作。

机械手文献综述

毕业设计(论文) 文献综述 设计(论文)题目:4自由度气动机械手设计 学院名称:机械工程学院 专业:机械设计制造及其自动化 学生姓名:卢锋学号:07403010309 指导教师:杨超珍 2010年12 月24 日

机械手的发展及应用 前言 机械工业是国民的装备部,是为国民经济提供装备和为人民生提供耐用消费品的产业。机械工业的规模和技术水平是衡量国家经济实力和科学技术水平的要标志。因此,世界各国都把发展机械工业作为发展本国经济的战略重点之一。生产水平及科学技术的不断进步与发展带动了整个机械工业的快速发展。现代工业中,生产过程的机械化,自动化已成为突出的主题。然而在机械工业中,加工、装配等生产是不连续的。单靠人力将这些不连续的生产工序接起来,不仅费时而且效率不高。同时人的劳动强度非常大,有时还会出现失误及伤害。显然,这严重影响制约了整个生产过程的效率和自动化程度。机械手的应用很好的解决了这一情况,它不存在重复的偶然失误,也能有效的避免了人身事故。 1.机械手的组成 1.1 执行机构 机械手主要由执行机构、驱动机构和控制系统三大部分组成。其组成及相互关系如下图: (1)手部 手部安装在手臂的前端。手臂的内孔装有转动轴,可把动作传给手腕,以转动、伸屈手腕,开闭手指。 机械手手部的机构系模仿人的手指,分为无关节,固定关节和自由关节三种。手指的数量又可以分为二指、三指和四指等,其中以二指用的最多。可以根据夹持对象的形状和大小配备多种形状和尺寸的夹头,以适应操作需要。

(2)手臂 手臂有无关节和有关节手臂之分本课所做的机械手的手臂采用无关节臂手臂的作用是引导手指准确的抓住工件,并运送到所需要的位置上。为了使机械手能够正确的工作,手臂的三个自由度都需要精确的定位。 总括机械手的运动离不开直线移动和转动二种,因此,它采用的执行机构主要是直线油缸、摆动油缸、电液脉冲马达、伺服油马达、直流伺服马达和步进马达等。 躯干是安装手臂、动力源和执行机构的支架。 1.2 驱动机构 驱动机构主要有四种:液压驱动、气压驱动、电气驱动和机械驱动。其中以液压气动用的最多,占90%以上,电动、机械驱动用的较少。 液压驱动主要是通过油缸、阀、油泵和油箱等实现传动。它利用油缸、马达加上齿轮、齿条实现直线运动;利用摆动油缸、马达与减速器、油缸与齿条、齿轮或链条、链轮等实现回转运动。液压驱动的优点是压力高、体积小、出力大、运动平缓,可无级变速,自锁方便,并能在中间位置停止。缺点是需要配备压力源,系统复杂成本较高。 气压驱动所采用的元件为气压缸、气压马达、气阀等。一般采用4-6 个大气压,个别的达到 8-10 个大气压。它的优点是气源方便,维护简单,成本低。缺点是出力小,体积大。由于空气的可压缩性大,很难实现中间位置的停止,只能用于点位控制,而且润滑性较差,气压系统容易生锈。 电气驱动采用的不多。现在都用三相感应电动机作为动力,用大减速比减速器来驱动执行机构;直线运动则用电动机带动丝杠螺母机构;有的采用直线电动机。通用机械手则考虑用步进电机、直流或交流的伺服电机、变速箱等。电气驱动的优点是动力源简单,维护,使用方便。驱动机构和控制系统可以采用统一形式的动力,出力比较大;缺点是控制响应速度比较慢。机械驱动只用于固定的场合。一般用凸轮连杆机构实现规定的动作。它的优点是动作确实可靠,速度高,成本低;缺点是不易调整。 1.3 控制系统 机械手控制系统的要素,包括工作顺序、到达位置、动作时间和加速度等。 控制系统可根据动作的要求,设计采用数字顺序控制。它首先要编制程序加以存储,然后再根据规定的程序,控制机械手进行工作。随着科学技术的发展,机械手也越来越多的地被应用。

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Introduction to Robotics Mechanics and Control Abstract This book introduces the science and engineering of mechanical manipulation. This branch of the robot has been in several classical field based. The main related fields such as mechanics, control theory, computer science. In this book, Chapter 1 through 8 topics ranging from mechanical engineering and mathematics, Chapter 9 through 11 cover control theory of material, and twelfth and 13 may be classified as computer science materials. In addition, this book emphasizes the computational aspects of the problem; for example, each chapter it mainly mechanical has a brief section calculation. This book is used to teach the class notes introduction to robotics, Stanford University in the fall of 1983 to 1985. The first and second versions have been through 2002 in use from 1986 institutions. Using the third version can also benefit from the revised and improved due to feedback from many sources. Thanks to all those who modified the author's friends. This book is suitable for advanced undergraduates the first grade curriculum. If students have contributed to the dynamics and linear algebra course in advanced language program in a basic course of statics. In addition, it is helpful, but not absolutely necessary, let the students finish the course control theory. The purpose of this book is a simple introduction to the material, intuitive way. Specifically, does not need the audience mechanical engineer strict, although much of the material is from the field. At the Stanford University, many electrical engineers, computer scientists, mathematicians find this book very readable. Here we only on the important part to extract. The main content 1、B ackground The historical characteristics of industrial automation is popular during the period of rapid change. Either as a cause or an effect of automation technology, period of this change is closely linked to the world economy. Use of industrial robots, can be identified in a unique device 1960's, with the development of computer aided design (CAD) system and computer aided manufacturing (CAM) system, the latest trends, automated manufacturing process. The technology is the leading industrial automation through another transition, its scope is still unknown. In

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