(优选)机械专业英语课件.
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《机械类专业英语》课件
Skimming
This skill allows readers to quickly scan through the text to get a general understanding of the content It is often used to identify key information or main ideas
Learning significance and purpose
Learning significance and purpose
Learning significance: Mastering mechanical English is of great significance for enhancing personal competitiveness, broadening international perspectives, and promoting academic exchanges.
PPT courseware for Mechanical Professional English
• Introduction to Mechanical Professional English
• Mechanical English Vocabulary • Mechanical English Reading and
Outline
Skimming through the text to identify key information or ideas and creating an outline to organize them This helps readers understand the structure of the article and how different ideas are connected
This skill allows readers to quickly scan through the text to get a general understanding of the content It is often used to identify key information or main ideas
Learning significance and purpose
Learning significance and purpose
Learning significance: Mastering mechanical English is of great significance for enhancing personal competitiveness, broadening international perspectives, and promoting academic exchanges.
PPT courseware for Mechanical Professional English
• Introduction to Mechanical Professional English
• Mechanical English Vocabulary • Mechanical English Reading and
Outline
Skimming through the text to identify key information or ideas and creating an outline to organize them This helps readers understand the structure of the article and how different ideas are connected
机械类专业英语ppt课件
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14
❖ cumulative ['kjuːmjʊlətɪv]
❖ adj. 累积的
❖ cumulative error 累积误差 ; 积累误差 ; 累积差误 ❖ cumulative frequencies 累积频数 ; 累计频数 ❖ cumulative learning 累积学习
❖ dimensionless
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18
❖ uniaxial ❖ adj. 单轴（向）的，同轴的
念 ; 压力集中 ❖ axial stress 轴向应力 ; 轴应力 ; 多轴向应力 ❖ ; 热应力试验 ❖ stress corrosion 应力腐蚀 ; 超应力腐蚀 ; 应力腐化 ; 应 ❖ Stress ball 压力球 ; 减压球 ; 美国原装 ; 握力球 ❖ stress amplitude 应力幅 ; 应力幅值 ; 应力幅度 ; 应力振幅
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15
❖ quantity
❖ n. 参数，值；数量；总量
❖ physical quantity 物理量 ; 物理量 ; 实物量 ; 要的实物量 ❖ dimensionless quantity 无量纲量 ; 无因次量 ; 无因次值 ❖ average quantity 平均数量 ; 平均量 ; 均匀数量 ; 均匀数目 ❖ additional quantity 追加数量 ; 额外数量 ; 附加量 ❖ considerable quantity 大数量 ; 可观的
❖ magnitude
❖ n. 数量、数值；大小；量级
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10
❖ equilibrium ❖ n. 平衡；稳定；保持平衡的能力
❖ [,iːkwɪ'lɪbrɪəm]
机械专业英语课件 PPT
1.There are two kinds of gun drills, namely, the center-cut gun drill used for drilling blind holes and the trepanning drill.
深孔钻分为两种，即用于钻削盲孔的中心钻和套孔 钻。
另一方面，直柄钻被固定到钻夹中，同理， 钻夹以与锥柄钻相同的方式固定到主轴孔中。
Paragraph 5
1.Twist drills are usually made of high-speed steel, although carbide-tipped drills are also available. The size of twist drills used in industrial range from 0.01 up to 3.25 in. (i.e., 0.25 up to 80 mm).
钻是利用绕轴旋转的钻头在工件上生成通孔或盲 孔的加工工艺。
2.Consequently, the range of cutting from that axis of rotation is equal to the radius of required hole.
因此，旋转轴的切削范围就等于所钻孔的半径。
2.This type of drill may have either three or four flutes and equal number of margins, which ensure superior guidance, thus resulting in high machining accuracy.这种类型的钻具有三个或四个出屑槽以及 相同数量的刃带，这些可确保准确的导向，从而获 得较高的机加工精度。
深孔钻分为两种，即用于钻削盲孔的中心钻和套孔 钻。
另一方面，直柄钻被固定到钻夹中，同理， 钻夹以与锥柄钻相同的方式固定到主轴孔中。
Paragraph 5
1.Twist drills are usually made of high-speed steel, although carbide-tipped drills are also available. The size of twist drills used in industrial range from 0.01 up to 3.25 in. (i.e., 0.25 up to 80 mm).
钻是利用绕轴旋转的钻头在工件上生成通孔或盲 孔的加工工艺。
2.Consequently, the range of cutting from that axis of rotation is equal to the radius of required hole.
因此，旋转轴的切削范围就等于所钻孔的半径。
2.This type of drill may have either three or four flutes and equal number of margins, which ensure superior guidance, thus resulting in high machining accuracy.这种类型的钻具有三个或四个出屑槽以及 相同数量的刃带，这些可确保准确的导向，从而获 得较高的机加工精度。
《机械专业英语unit》课件
Example analysis
Case Studies
Analyze real world case studies to demonstrate practical applications of mechanical writing
Compare and Contrast
Compare different writing styles and techniques to identify best practices
Standard expression: Mechanical English requires standardized and rigorous expression, in accordance with industry standards.
02
Common vocabulary and expressions in mechanical engineering English
Language accuracy
Use precision language and avoid technical errors
Clarity
Use simple language and avoid jargon to ensure the reader easily understands the content
Writing Standards
01
02
03
04
APA Style: Follow the American Psychological Association (APA) style guide for formatting and citations
APA Style: Follow the American Psychological Association (APA) style guide for formatting and citations
机械专业英语课件
Casting process is a manufacturing process in which molten metal is poured or injection and allowed to solidify in a suitably shaped mold cavity. During or after cooling, the cast part is removed from the mold and then processed for delivery （交货）. Casting processes and cast material technologies vary from simple to highly complex. Material and process selection depends on the part’s complexity and function, the product’s quality specification, and the projected cost level.
The molten material is poured into the pouring cup（浇口杯）, which is part of the gating system（浇注系统） that supplies the molten material to the mold cavity. The vertical part of the gating system connected to the pouring cup is the sprue （浇道）, and the horizontal portion is called the runner and finally to the multiple points where it is introduced to be mold cavity called the gates. Additionally there are extensions to the gating system called vents that provide the part for the built-up gases and the displaced air to vent to the atmosphere. Multi- multifunction, multidirectional, multimedia.
《机械类专业英语》课件
《机械类专业英语》PPT 课件
这是一份关于《机械类专业英语》的PPT课件，涵盖了机械类专业英语的基础 知识、技能培训、实践案例和学习资料推荐。
第一部分：机械类专业英语基础知识
机械类词汇学习
掌握机械类专业中常用的英文词汇，扩展专业词汇量。
机械类专业常用句型
学习机械类专业中常见的句型，提高英语表达能力。
机械类专业常见缩写和术语解释
了解机械类专业中常用的缩写和术语，避免词汇歧义。
第二部分：机械类专业英语技能培训
机械类专业文档英文写作 技巧
分享撰写机械类专业文档的英文 写作技巧和注意事项。
机械类专业技术文献阅读 策略
介绍阅读机械类专业技术文献的 方法和技巧。
机械类专业领域英语口语 表达技巧
分享在机械类专业领域进行英语 口语表达的技巧和经验。
第三部分：机械类专业英语实践案例
1
机械类专业项目报告英文演讲
演示机械类专业项目报告时的英文演讲技巧和范例。
2
机械类专业跨文化交流中的英语技巧
探讨在机械类专业跨文化交流中使用英语的技巧和方法。
3
机械类专业国际会议英语能力培训
培养参加机械类专业国际会议时的英语交流能力和跨文化沟通技巧。
第四部分：机械类专业英语学习资料推荐
1 机械类英语在线学习 2 机械类英语词汇学习 3 机械类英语学习书籍
网站推荐
助手推荐
推荐
介绍几个优质的机械类英 语在线学习网站，提供学 习资习助手工具，帮 助提高词汇记忆。
推荐一些经典的机械类英 语学习书籍，助力学习进 步。
总结
通过本次《机械类专业英语》PPT课件，您将了解机械类专业英语的基础知识、 技能培训、实践案例和学习资料推荐，帮助您提升在机械类专业领域中的英 语能力。
这是一份关于《机械类专业英语》的PPT课件，涵盖了机械类专业英语的基础 知识、技能培训、实践案例和学习资料推荐。
第一部分：机械类专业英语基础知识
机械类词汇学习
掌握机械类专业中常用的英文词汇，扩展专业词汇量。
机械类专业常用句型
学习机械类专业中常见的句型，提高英语表达能力。
机械类专业常见缩写和术语解释
了解机械类专业中常用的缩写和术语，避免词汇歧义。
第二部分：机械类专业英语技能培训
机械类专业文档英文写作 技巧
分享撰写机械类专业文档的英文 写作技巧和注意事项。
机械类专业技术文献阅读 策略
介绍阅读机械类专业技术文献的 方法和技巧。
机械类专业领域英语口语 表达技巧
分享在机械类专业领域进行英语 口语表达的技巧和经验。
第三部分：机械类专业英语实践案例
1
机械类专业项目报告英文演讲
演示机械类专业项目报告时的英文演讲技巧和范例。
2
机械类专业跨文化交流中的英语技巧
探讨在机械类专业跨文化交流中使用英语的技巧和方法。
3
机械类专业国际会议英语能力培训
培养参加机械类专业国际会议时的英语交流能力和跨文化沟通技巧。
第四部分：机械类专业英语学习资料推荐
1 机械类英语在线学习 2 机械类英语词汇学习 3 机械类英语学习书籍
网站推荐
助手推荐
推荐
介绍几个优质的机械类英 语在线学习网站，提供学 习资习助手工具，帮 助提高词汇记忆。
推荐一些经典的机械类英 语学习书籍，助力学习进 步。
总结
通过本次《机械类专业英语》PPT课件，您将了解机械类专业英语的基础知识、 技能培训、实践案例和学习资料推荐，帮助您提升在机械类专业领域中的英 语能力。
《机械类专业英语》课件
Summary
Mastering common sentence patterns and grammar is the key to accurately expressing concepts in the field of machinery.
Detailed description
There are some specific sentence patterns and grammatical structures in Mechanical English, such as passive voice and complex sentence patterns. Learners need to be familiar with these sentence patterns and grammar to ensure that they can accurately and fluently express their meaning in writing and speaking.
Course objectives and learning significanceCourse objective: By studying mechanical engineering English, students will be able to master professional English vocabulary, terminology, and expressions in the field of mechanical engineering, and improve their reading, writing, translation, and communication skills.Learning significance: Students with mechanical English proficiency can better adapt to international demands, enhance their competitiveness in the field of mechanical engineering, and also contribute to promoting technical exchange and cooperation in the field of mechanical engineering.
机械工程专业英语课件L
Helical gears subject the shaft bearings to both radial and thrust loads.
斜齿轮使轴承承受径向力和轴向力。 When the thrust loads become high or are
objectionable for other reasons, it may be desirable to use double helical gears. 当轴向力过大或由于别的原因而产生不利影响时， 那就可能需要使用人字齿轮。
A pair of meshed crossed helical gears usually have the same hand; that is, a right-hand driver
goes with a right-hand driven. 一对相互啮合的交错轴斜齿轮通常具有同样的齿 向，即右旋主动齿轮跟右旋从动齿轮相啮合。
EnglishforMechanicalEngineering
机械工程专业英语
机械工程专业英语
Lesson 21 Helical, Worm and Bevel Gears
一、预备知识
齿轮机构可以用来传递空间任意两轴间的运动。
? 两平行轴间的齿轮传动：
直齿圆柱齿轮：重叠系数太小，冲击大，噪音大 斜齿圆柱齿轮：重叠系数增大，但产生轴向力
பைடு நூலகம்
The helix angle is the same on each gear, but one gear must have a right-hand helix and the other a
left-hand helix.
两个齿轮的螺旋角相等，但一个齿轮必须右旋， 而另一个齿轮必须是左旋。
斜齿轮使轴承承受径向力和轴向力。 When the thrust loads become high or are
objectionable for other reasons, it may be desirable to use double helical gears. 当轴向力过大或由于别的原因而产生不利影响时， 那就可能需要使用人字齿轮。
A pair of meshed crossed helical gears usually have the same hand; that is, a right-hand driver
goes with a right-hand driven. 一对相互啮合的交错轴斜齿轮通常具有同样的齿 向，即右旋主动齿轮跟右旋从动齿轮相啮合。
EnglishforMechanicalEngineering
机械工程专业英语
机械工程专业英语
Lesson 21 Helical, Worm and Bevel Gears
一、预备知识
齿轮机构可以用来传递空间任意两轴间的运动。
? 两平行轴间的齿轮传动：
直齿圆柱齿轮：重叠系数太小，冲击大，噪音大 斜齿圆柱齿轮：重叠系数增大，但产生轴向力
பைடு நூலகம்
The helix angle is the same on each gear, but one gear must have a right-hand helix and the other a
left-hand helix.
两个齿轮的螺旋角相等，但一个齿轮必须右旋， 而另一个齿轮必须是左旋。
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Paragraph 1
Any consideration of engineering materials and engineering design of systems utilizing materials must initially deal with(涉及到) Murphy’s Law for Materials systems and the laws of materials applications:
We sometimes allude to a design cycle, but the process may contain a design cycle plus design implementation, which involves actual production based upon the design.
工程材料和应用材料的系统工程设计最初都会涉及 材料的墨菲法则和材料应用法则。
Murphy’s Law: If any material can fail, it will. Laws of materials applications (1) All materials are unstable. (2) The materials system is only as strong or
Creep deformation 蠕变变形
Creep fracture 蠕变断裂
Stress and environment can act in concert to cause failure, for example, stress corrosion cracking.
Creep-temperature effects and stresstemperature effects can contribute to the degradation of properties and components and system failure.
计算机辅助设计现在已用于设计过程，各种设计和设 计思想能被检验和仿真。
Paragraph 4:
Even in the early design cycle, it is useful to have some concept of available materials.
设计过程通常从解决方案的详细描述开始。有时我们 把设计过程说成是设计循环，但它或许是一个设计循 环外加依赖于设计而进行实际生产的设计实施过程。
The design cycle can involve the original thoughts, sketches, and knowledge that in the specification stage produce engineering drawings.
Although they are both obvious and incontrovertible(无可争辫的), we might elaborate upon these laws, especially the laws of materials applications.
All materials are indeed unstable. Even such materials as platinum can be
Creep(蠕变) is an example. Given enough time, failure(失效) can be calculated
to occur in all materials under creep stress.
在压力作用下，所有材料都会ቤተ መጻሕፍቲ ባይዱ变化。蠕变(creep) 是一个例子。在蠕变压力作用下，若有足够的时间， 所有材料一定会产生屈服。
压力和环境共同（in concert）作用会造成屈服，例 如，应力腐蚀裂纹。蠕变温度影响和应力—温度影响 都会导致性能降低、零件和系统失败。
The design process
Paragraph 3:
The design process usually begins with a specification of a solution.
（优选）机械专业英语课 件.
1
Lesson 7 Engineering Design and safety factors 工程设计和安全系数
重点词汇：
allude saftey factor yield strength/ultimate tensile strength requisite/requirement/require evaluation/evaluate crystal bizarre
degraded in particular environments.
虽然这些法则是显见的、不容置疑的，我们还要详细 描述这些法则，特别是材料应用法则。所有材料确实 是不牢固的。即使像白金（platinum）这样的材料在 特殊环境中也会性能减弱。
Under stress(应力， strain 应变), all materials respond to that stress.
设计循环涉及最初的构想、草图、在详细描述阶段绘 制工作图的知识。
Computer-aided design (CAD, CAM计算机辅 助制造) is now employed to implement a cycle in which various designs or design ideas may be tested or simulated.
as stable as its weakest or most unstable component.
墨菲法则：如果任何材料有可能出问题，它 （系统）终将出问题。
材料应用法则：（1）任何材料都是不牢固的； （2）材料系统的强度和牢固程度仅仅像它最 薄弱的、最不牢固的部分。
爱德华·墨菲
Paragraph 2: