一、数字控制系统 1.定义:数字控制系统是一种以数字计算机为控制器去控制具有连续工作状态的被控对象的闭环控制系统

1线性系统的能控性与能观测性 一、能控性概念

一、环境及环境类型 二、生态因子(ecological factors) 三、阈与率 四、适应性 五、限制因子定律 六、耐受性定律 七、生态幅 八、指示生物 九、生态因子的综合作用定律

词汇A unit 1 1. physical ---a. of the 2. attraction---action or power of attracting 4. particular---more than usual, special, exceptional

词汇选择题 1. It is apparent that new energy sources will be required to keep up the societies of the world in the future

Translation(English to Chinese) 1. I was greatly impressed by its natural beauty when I took a study tour there two years ago 两年前,我在那里做过野外考查,那里的自然风光给我印象极深

Unit 1 1. The delegation has already arrived, but I didnt know it until this morning A.willcomeB.hadbeencomingC.wascomingD.comes

1. Introduction 2. Pre-reading questions 3. Writing skills 4. Language points 5. Discussion 6. Homework

Background knowledge The English Channel: commonly called the Channel is an arm of the Atlantic Ocean separating the southern coast of England from the northern coast of france, and connecting the Atlantic in the west with the north Sea on the east via the strait of dover

Background knowledge The author William Plomer(1903-1973), South African writer born of English parents. His works include novels, short stories poems and biographies, but he is best known for his short Stories