英语翻译摘要综述了近期光纤光缆和通信电缆在制造、施工及维护技术上的发展特点,分析了其发展趋势,并就我国光纤光缆及通信电缆技术与产业的发展提出了一些值得思考的问题.关键词

Question

英语翻译
摘 要
综述了近期光纤光缆和通信电缆在制造、施工及维护技术上的发展特点,分析了其发展趋势,并就我国光纤光缆及通信电缆技术与产业的发展提出了一些值得思考的问题.
关键词 光纤光缆 通信电缆 itu-t建议 技术发展
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摘要：本文介绍数据通信的构成原理、交换方式及其适用范围；数据通信的分类,并展望未来美好的应用前景.
主题词 数据通信 构成原理 适用范围 应用前景

Answer 1

1. summarized the near future fiber optic cable and the communications cable in the manufacture, the construction and the maintenance technology development characteristic, has analyzed its trend of development, and proposed on our country fiber optic cable and the communications cable technology and the industrial development some are worth the question which pondered. key word fiber optic cable communications cable itu-t suggestion technological development
2. abstract: This article introduces the data communication the constitution principle, the switching scheme and the applicable scope; Data communication classification, and look forward to the future happy application prospect. keyword data communication constitution principle applicable scope application prospect