数学专业英语第二版课后答案

1

目录

第一章....................................................................................................................................... 2

passage1：施工管理Construction Management ........................................................... 2 Passage2 项目管理与计算机 .......................................................................................... 2 Project Management and the Computer .......................................................................... 2 第二章.........................................................

1

目录

第一章....................................................................................................................................... 2

passage1：施工管理Construction Management ........................................................... 2 Passage2 项目管理与计算机 .......................................................................................... 2 Project Management and the Computer .......................................................................... 2 第二章.........................................................

1

目录

第一章....................................................................................................................................... 2

passage1：施工管理Construction Management ........................................................... 2 Passage2 项目管理与计算机 .......................................................................................... 2 Project Management and the Computer .......................................................................... 2 第二章.........................................................

数学专业英语课后答案(1)

2.1数学、方程与比例

词组翻译

1.数学分支branches of mathematics，算数arithmetics，几何学geometry，代数学algebra，三角学trigonometry，高等数学higher mathematics，初等数学elementary mathematics，高等代数higher algebra，数学分析mathematical analysis，函数论function theory，微分方程differential equation

2.命题proposition，公理axiom，公设postulate，定义definition，定理theorem，引理lemma，推论deduction

3.形form，数number，数字numeral，数值numerical value，图形figure，公式formula，符号notation(symbol)，记法/记号sign，图表chart

4.概念conception，相等equality，成立/真true，不成立/不真untrue，等式equation，恒等式identity，条件等式equation of condition，项/术语t

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

UNIT 1

A 电路

电路或电网络由以某种方式连接的电阻器、电感器和电容器等元件组成。如果网络不包含能源，如电池或发电机，那么就被称作无源网络。换句话说，如果存在一个或多个能源， 那么组合的结果为有源网络。在研究电网络的特性时，我们感兴趣的是确定电路中的电压和电流。因为网络由无源电路元件组成，所以必须首先定义这些元件的电特性. 就电阻来说，电压-电流的关系由欧姆定律给出，欧姆定律指出：电阻两端的电压等于电阻上流过的电流乘以电阻值。在数学上表达为: u=iR (1-1A-1)式中 u=电压，伏特；i = 电流，安培；R = 电阻，欧姆。 纯电感电压由法拉第定律定义，法拉第定律指出：电感两端的电压正比于流过电感的电流随时间的变化率。因此可得到：U=Ldi/dt 式中 di/dt = 电流变化率， 安培/秒； L = 感应系数， 享利。 电容两端建立的电压正比于电容两极板上积累的电荷q 。因为电荷的积累可表示为电荷增量dq 的和或积分，因此得到的等式为 u= ， 式中电容量C 是与电压和电荷相关的比例常数。由定义可知，电流等于电荷随时间的变化率，可表示为i = dq/dt。因此电荷增量dq 等于电流乘以相应的时间增量，或dq = i dt，

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

Unit1 college life Passage A

Read and think 2

1. The students were going to take their last exam at college. →解析： 参见短文的第一句话。

2. They were confident and felt ready for the exam. They think the coming exam is a snap. →解析： 参见短文第一、二、三段，尤其是第三段的第一句话。

3. They turned out to be difficult, because none of the questions could be answered by the students.

→解析： 参见老师在收回考卷后的提问以及学生的表情可以推断出考试题很难。 4. The professor said the result was what she had expected, but she would allow the students to pass the course any way.

→解析： 参见短文倒数

Unit1 college life Passage A

Read and think 2

1. The students were going to take their last exam at college. →解析： 参见短文的第一句话。

2. They were confident and felt ready for the exam. They think the coming exam is a snap. →解析： 参见短文第一、二、三段，尤其是第三段的第一句话。

3. They turned out to be difficult, because none of the questions could be answered by the students.

→解析： 参见老师在收回考卷后的提问以及学生的表情可以推断出考试题很难。 4. The professor said the result was what she had expected, but she would allow the students to pass the course any way.

→解析： 参见短文倒数

Unit1 college life Passage A

Read and think 2

1. The students were going to take their last exam at college. →解析： 参见短文的第一句话。

2. They were confident and felt ready for the exam. They think the coming exam is a snap. →解析： 参见短文第一、二、三段，尤其是第三段的第一句话。

3. They turned out to be difficult, because none of the questions could be answered by the students.

→解析： 参见老师在收回考卷后的提问以及学生的表情可以推断出考试题很难。 4. The professor said the result was what she had expected, but she would allow the students to pass the course any way.

→解析： 参见短文倒数