|
|
|
|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
|
|

| | This paper gives an outline of a new current—differential relay based on the techniques of optical fiber transmission and microcomputer, and further describes the principle and construction of the relay. Moreover,new methods are put forward to surmount the'particular problems existing in short-line protections. The relay applies to short distance power transmission line as well as network of short lines. | | 本文叙述了一种新型的利用光纤传输技术和微型计算机技术的全数字式光纤纵差保护装置,它是由华中理工大学和武汉邮电科学研究院激光通信研究所联合研制的,适用于短距离输电线路及其由短线路组成的环网。主要介绍了这套保护装置的原理和构成,针对短线纵差保护中的实际问题,提出了新的解决方案。 | | 文摘来源 | | In this article the technical and economic performance for optical fiber transmission is compared with those of microwave transmission,local cable transmission and PCM transmission,where the incomparable superiority of optical fiber transmission in rural telephone networking is revealed,and measures to further reduce the costs of rural digital opticalcable cornlnunication equipment are introduced. | | 本文综合分析光纤传输方式与微波、市话电缆、PCM传输方式的技术经济性能;论述光纤传输技术在农话组网中的应用;介绍进一步降低农用数字光缆通信设施成本的措施。 | | 文摘来源 | | Based on introduction for the typical scheme of key technology of super high speed fiber optic transmission and analysis and comparison between G.652,G.653 and G.65x fiber,this paper gives emphasis to discussion for fully utilization and development of G.652 fiber large scale used in the constructed optical cable backbones and for selection of fiber types in constructing optical cable backbones.Tactics exploration and related proposes have been completed for research and application of super high speed fibe... | | 本文介绍了超高速光纤传输关键技术的典型方案,对G.652、G.653和G.65x光纤进行了分析比较,重点讨论了已建光缆干线大量采用的G.652光纤的开发利用和新建光缆干线中光纤选型问题,最后提出了超高速光纤传输技术研究与应用的策略 | | 文摘来源 | |   | | << 更多相关文摘 |
|
相关查询: | |
对查询结果不满意
|
|
|