机械工程英语第二版翻译unit7

第一单元

? Types of Materials 材料的类型

Materials may be grouped in several ways. Scientists often classify materials by their state: solid, liquid, or gas. They also separate them into organic (once living) and inorganic (never living) materials.

材料可以按多种方法分类。科学家常根据状态将材料分为：固体、液体或气体。他们也把材料分为有机材料(曾经有生命的)和无机材料(从未有生命的)。

For industrial purposes, materials are divided into engineering materials or nonengineering materials. Engineering materials are those used in manufacture and become parts of products.

就工业效用而言，材料被分为工程材料和非工程材料。那些用于加工制

? Types Materials

材料的类型

Materials may be grouped in several ways. Scientists often classify materials by their state: solid, liquid, or gas. They also separate them into organic (once living) and inorganic (never living) materials.

材料可以按多种方法分类。科学家常根据状态将材料分为：固体、液体或气体。他们也把材料分为有机材料(曾经有生命的)和无机材料(从未有生命的)。

For industrial purposes, materials are divided into engineering materials or nonengineering materials. Engineering materials are those used in manufacture and become parts of products.

就工业效用而言，

1.With low-power machinery or vehicles the operator can usually apply sufficient force through a simple mechanical linkage from the pedle or handle to the stationary part of the brake. In many cases, however, this force must be multiplied by using an elaborate braking system.（P5） 用低能机器或传力工具，操作者通过向踏板或把手的一个简单机械连接构件作用足够的力量到车闸固定的部分。大多数情况，然而，用一个详细（复杂）的车闸系统使这个力量成倍增加。

2. The fundamental principle involved is the use of compressed air acting through a piston in a cylinder to set block brakes on the wheels. The action is simultaneou

1.With low-power machinery or vehicles the operator can usually apply sufficient force through a simple mechanical linkage from the pedle or handle to the stationary part of the brake. In many cases, however, this force must be multiplied by using an elaborate braking system.（P5） 用低能机器或传力工具，操作者通过向踏板或把手的一个简单机械连接构件作用足够的力量到车闸固定的部分。大多数情况，然而，用一个详细（复杂）的车闸系统使这个力量成倍增加。

2. The fundamental principle involved is the use of compressed air acting through a piston in a cylinder to set block brakes on the wheels. The action is simultaneo

新职业英语 第二版 职业综合英语1 Unit7

教 案1

授课时间 班 班 班 周星期 第 节 周星期 第 节 周星期 第 节 班 班 周星期 第 节 周星期 第 节 课 次 授课形式 （请打√）17 学时数 2 纯理论□ 纯实践□ 理实一体化□ 习题课□ 其他□ Unit7 Customer Service 授课题目 Reading A: I Really Want to Know 教学目的 Ss make and handle a complaint Ss understand successfully measuring customer satisfaction 1. The main idea and the structure of the reading A. 教学重点 2. Master the key words and language point

Electronic Teaching Portfolio Book Four

Unit Seven: Reading and Reflection

Part I Get Started

Section A Discussion

▇ Sit in pairs or groups and discuss the following questions. 1 Why do you think we need to read?

2 What do you prefer to read — poems, novels or plays?

3 What role do you think literary works play in our lives?

▆ Answers for reference: 1 Hints:

? Reading broadens our horizons. ? Reading enriches our knowledge.

? Reading puts us in contact with the best minds of human history. ? Reading enriches our experi

Electronic Teaching Portfolio Book Four

Unit Seven: Reading and Reflection

Part I Get Started

Section A Discussion

▇ Sit in pairs or groups and discuss the following questions. 1 Why do you think we need to read?

2 What do you prefer to read — poems, novels or plays?

3 What role do you think literary works play in our lives?

▆ Answers for reference: 1 Hints:

? Reading broadens our horizons. ? Reading enriches our knowledge.

? Reading puts us in contact with the best minds of human history. ? Reading enriches our experi

Electronic Teaching Portfolio Book Four

Unit Seven: Reading and Reflection

Part I Get Started

Section A Discussion

▇ Sit in pairs or groups and discuss the following questions. 1 Why do you think we need to read?

2 What do you prefer to read — poems, novels or plays?

3 What role do you think literary works play in our lives?

▆ Answers for reference: 1 Hints:

? Reading broadens our horizons. ? Reading enriches our knowledge.

? Reading puts us in contact with the best minds of human history. ? Reading enriches our experi

Electronic Teaching Portfolio Book Four

Unit Seven: Reading and Reflection

Part I Get Started

Section A Discussion

▇ Sit in pairs or groups and discuss the following questions. 1 Why do you think we need to read?

2 What do you prefer to read — poems, novels or plays?

3 What role do you think literary works play in our lives?

▆ Answers for reference: 1 Hints:

? Reading broadens our horizons. ? Reading enriches our knowledge.

? Reading puts us in contact with the best minds of human history. ? Reading enriches our experi

专业英语翻译

UNIT 1

材料的类型

材料可以按多种方法分类。科学家常根据状态将材料分为：固体、液体或气体。他们也把材料分为有机材料(曾经有生命的)和无机材料(从未有生命的)。

就工业效用而言，材料被分为工程材料和非工程材料。那些用于加工制造并成为产品组成部分的就是工程材料。 非工程材料则是化学品、燃料、润滑剂以及其它用于加工制造过程但不成为产品组成部分的材料。

工程材料还能进一步细分为：①金属材料②陶瓷材料③复合材料 ④聚合材料，等等。

金属和金属合金

金属就是通常具有良好导电性和导热性的元素。许多金属具有高强度、高硬度以及良好的延展性。

某些金属能被磁化，例如铁、钴和镍。在极低的温度下，某些金属和金属化合物能转变成超导体。

合金与纯金属的区别是什么？纯金属是在元素周期表中占据特定位置的元素。例如电线中的铜和制造烹饪箔及饮料罐的铝。

合金包含不止一种金属元素。合金的性质能通过改变其中存在的元素而改变。金属合金的例子有：不锈钢是一种铁、镍、铬的合金，以及金饰品通常含有金镍合金。

为什么要使用金属和合金？许多金属和合金具有高密度，因此被用在需要较高质量体积比的场合。

某些金属合金，例如铝基合金，其密度低，可用于航空航天以节约燃料。许多合金还具有高断裂韧性，这意味着它