例1一飞轮半径为0.2m、转速为150rmin-1,因 受制动而均匀减速,经30s停止转动.试求:(1) 角加速度和在此时间内飞轮所转的圈数;(2)制动开 始后t=6s时飞轮的角速度;(3)t=6s时飞轮边缘 上一点的线速度、切向加速度和法向加速度

一、由电路求响应 由S域等效电路 1.元件→域运算阻抗R,L,M,C→R,L,M、 sC信号→象函数i(t),u(t)→I(s),U(s)

Unit 1 My First Job Unit 2 American Homes and British Homes Unit 3 What is in a Name? Unit 4 Doing Away with the King's English Unit 5 England as seen by Americans Unit 6 The First Day at School Unit 7 Computers Unit 8 The Missing Monarchs Unit 9 The Risks of Life Unit 10 Words can Give You Power Unit 11 The Transaction Unit 12 The Message Behind the Smile Unit 13 A Delightful Village Unit 14 The Mystery of the White Gardenia Unit 15 For or Against Smoking in Public Places Unit 1 Someone Waiting Unit 2 Football Unit 3 The Snake Bite Unit 4 He was My Father Unit 5 The English Countryside Unit 6 Suffering to Be Beautiful Unit 7 Waiting for a Call Unit 8 Secret Messages to Ourselves Unit 9 All That' s Happening in the Music World Unit 10 Teenager's Nightmare the English Countryside Unit 11 Understanding Your Owner Unit 12 Transforming Mars Unit 13 The Mud-backs Unit 14 The Japanese Ageing Suit Unit 15 Have You Seen the Tree? Unit 1 My Father Unit 2 Why My Great-uncle Gave up the Ministry

9-4单变量有理函数域 9.4.1域上的一元有理分式域的定义 设R为一整环,命S={(b,a)|a,b∈R,a≠0}。现在S中规定为 逐一验证“反身性”、“对称性”、“传递性”可知为一等价关系。用(b,a)表示与 (ba)等价的元素的全体。现记S关于u的等价类的集合为%,则(b,a)是中的元 素。下面在上定义二元运算:

2-1设n个人围坐在一个圆桌周围,现在从第s个人开始报数,数到第m个人,让他出局;然后从出局的下一个人重新开始报数,数到第m个人,再让他出局,…,如此反复直到所有的人全部出局为止。下面要解决的 Josephus问题是:对于任意给定的n,s和m,求出这n个人的出局序列。请以n=9,s=1,m=5为例,人工模拟 Josephus的求解过程以求得问题的解。 【解答】 出局人的顺序为5,1,7,4,3,6,9,2,8

4.5用拉普拉斯变换法分析电路、s域的元件模型 4.6系统函数H(s) 4.7系统函数的零、极点分布决定时域特性 4.8系统函数的零、极点分布决定频域特性 4.10全通网络和最小相移函数的零极点分布 4.11线性系统的稳定性 本章要求

What new element is Castigliano s Theorem introducing? 1. None, it's just a particular case of the PMPE 2. It's a totally different principle that allows to obtain solutions of elasticity problems with unprecedented accuracy and efficiency in- cluding relativistic effects

Teaching points I. Background information II. Introduction to the passage III. Text analysis IV rhetorical devices V. Questions for discussion

For the uniform state of plane strain shown in the fig ure,which one(s) of the following statement(s) is(are valid?(Assume Poisson's ratio v+0)

4.1菲涅耳(Fresnel)公式 入射光在媒质界面处分为反射和折射两部分。 一振动矢量的分解 将振动矢量分解为垂直于入射面的S分量和平行于入面的P分量P、S和k构成右 手系。S沿+y方向为正。图示为各个分量的正方向