1. to know the operation and advances of WDM and optical network Teaching 2. to understand the main idea and organization of the text; Objectives 3.to master some important new words, phrases and their

I. Revision mins com Teacher uses the following exercise to help the students to revise the important expressions or phrases

1. to know Cellular Mobile Telephone System Teaching 2. to understand the construction of cellular mobile telephone system Objectives

Word13 multimedia[. mAl i''midjn.多媒体 describe[dis k]v.描述,形容 mixture['m tfan.混合,混合物 consequent['kon wan]a.作为结果的,随之发生的

NEW WORDS AND PHRASES vISIonary[ vita n ari]n.幻想家,梦想家 contribute [kan tribju]v.捐献,贡献 kan]adv.重大的,效果显著的,具有特殊意义的

11, Circuit Switching and Packet Switching destination[. de ti' n e i jan]n.目的地,终点 allocate[' aelak e i t]vt.分配,分派,配给 release[ri'li:s]vt.释放,放松,发布 Jargon[吗a:gan]n.行话,土语

asynchronous[a'si6 k ranas]a.异步的 serial[' sirian]a.串行的,串联的 transmission[ t raen z'mi∫an]a.传输,发送 interface[ i n taf e i s]r.接口

第一节 支路电流法 第二节 回路电流法 第三节 节点电压法

cellular[' se j u13]a.细胞(状)的,蜂窝状的,单元的 mobile[' mou a i l,' mou i()1]a.运动的,流动的,机动的,装在车上的 deploy[di' p iJv.;n.展开,使用,推广应用

1. The Internet is the largest repository of information which can provide very very large network resources. The network resources can be divided into