四川邮电职业技术学院教案专用纸 17.与本单元课题有关的电信术语或用语: long-haul trunk长途干线 maging bundles成像光束 fiber optics光纤学 optical cables光缆 microbend loss微弯损耗 mut- fibre connectors多纤连接器 threshold currents阈值电流 projected lifetimes设计(使用)寿命 light sources光源 photodetector光电检测器 wavelength波长 video bandwidth视频带宽 roadband services宽带业务 picturephone可视电话 epeater spacing中继距离 wavelength multiplexing波分复用 LED( light-emitting diode)发光二级管 wideband subscriber loop system宽带用户环路系统 graded- -index multimode fibre渐变多模光纤 distributed- feedback laser分布反馈激光器 fiber dispersion effects光纤色散效应 I. Post-reading activities i.Review the important expressions, phrases or sentences which were learnt in the 20 mins study of text by guiding the students through Exercises 1-2 between Page 41 and Page 42 in class ii. Ask the students to summarize the translation skills touched upon in the study of the text Possible answers:被动语态的译法和词类转化 1 mins V. Further Development of the Theme-related Specialized Knowledge 数据通信基本知识 http://www.emoyo.net/tech/showarticle.asp?articleld=200 VI Assignments Preview Unit 6 2. Do Exercises 3-5 between Page 63 and Page 66 Page 6 of 6 Teaching Plan of Telecommunications English Unit 5四川邮电职业技术学院教案专用纸 Page 6 of 6 Teaching Plan of Telecommunications English Unit 5 17. 与本单元课题有关的电信术语或用语： long-haul trunk 长途干线 imaging bundles 成像光束 fiber optics 光纤学 optical cables 光缆 microbend loss 微弯损耗 multi-fibre connectors 多纤连接器 threshold currents 阈值电流 projected lifetimes 设计（使用）寿命 light sources 光源 photodetector 光电检测器 wavelength 波长 video bandwidth 视频带宽 broadband services 宽带业务 picturephone 可视电话 repeater spacing 中继距离 wavelength multiplexing 波分复用 LED (light-emitting diode) 发光二级管 wideband subscriber loop system 宽带用户环路系统 graded-index multimode fibre 渐变多模光纤 distributed-feedback laser 分布反馈激光器 fiber dispersion effects 光纤色散效应 IV. Post-reading Activities i. Review the important expressions , phrases or sentences which were learnt in the study of text by guiding the students through Exercises 1-2 between Page 41 and Page 42 in class . ii. Ask the students to summarize the translation skills touched upon in the study of the text. Possible answers: 被动语态的译法和词类转化 V. Further Development of the Theme-related Specialized Knowledge 数据通信基本知识： http://www.emoyo.net/tech/ShowArticle.asp?ArticleID=200 VI. Assignments 1. Preview Unit 6 2. Do Exercises3-5 between Page 63 and Page 66 20 mins 1 mins 1 mins