Bell Labs, Lucent Technologies, Crawford Hill Lab, Holmdel, NJ 07733, USA: herwig@lucent.com Abstract Optical communication has advanced into the tera-era deploying 1/2 terameter of fiber and carrying several Tb/s per fiber. Remaining challenges include extending the success of point-to-point long-haul to metropolitan networks and broadband access applications. Introduction Reflecting on the past 15 years of optical communication, one can only marvel at the amazing advances in this technology and in its applications

一、理解万维网(World Wide Web)的工作原理; 二、能够描述 Internet和万维网的特征及其服务; 三、了解学术论文写作的有关知识

1.三大检索工具简介 ·科技部下属的“中国科学技术信息研究所”从 1987年起,每年以国外四大检索工具SCI、ISTP、 E、ISR为数据源进行学术排行。 由于ISR(《科学评论索引》)收录的论文与SCI 有较多重复,且收录我国的论文偏少;因此, 自1993年起,不再把ISR作为论文的统计源。而 其中的SCI、ISTP、E数据库就是图书情报界常 说的国外三大检索工具

Unit 9 Computer virus Text 1 Virus Introduction Viruses will cause much confusion. Even some virus\experts\will misinform the cause of the virus. Let's define what we mean by virus a virus is a program that reproduces its own code by attaching itself to other executable files

1. 了解操作系统是如何实现资源分配和用户接口功能的。 2. 通过学习操作系统功能的演化，认识操作系统在实现过程中采用的基本概念与技术，了解操作系统设计中的概念。 3. 认识操作系统的结构，了解当前常见操作系统的特点 4. 掌握被动语态的翻译技巧

一、掌握软件的生命周期的基本术语与知识; 二、了解软件工程的发展趋势; 三、了解软件设计方法; 四、了解软件安全的有关知识; 五、掌握复杂定语(从句)的翻译技巧

Unit 7 The Fundamentals of computer Software Text 1 Data Structure A data structure is a data type. Its values are composed of component elements that are related by some structure Since a data structure is a data type, it has a set of operations on its values. In addition, there

Unit 2 More about Computer Text 1 Guess What It is Let's begin this unit with a riddle. Try to guess what it is? It is like a tv. but it is not It is a calculator but it is more than a calculator It is not so mysterious, but it is powerful and intelligent When you want to send or receive e-mail

Chapter 9 The World Wide Web Requirements: 1、理解万维网(World Wide Web)的工作原理; 2、能够描述 Internet和万维网的特征及其服务; 3、了解学术论文写作的有关知识

Reading skills of scientific and technical English Reading for Main Idea(获取主题思想) 我们可以把获取主题思想的阅读技巧分四步 1辨认主题名词 identify subject word 2找出主题词 find subject word 3获取主题思想 gain main idea 4避免不相关的内容 avoid disrelated content