介绍了有线电视网中AM光缆干线传输综合指标的分析与设计。
The analysis and design of AM cable trunk target in close circuit TV system is discussed in the paper.
干线综合测试仪是对通信系统中的干线传输设备进行检测的仪器。
Trunk Tester is equipment that is used to test trunk transmission equipment of the communications system.
结合广东有线数字电视干线传输平台建设，详细介绍了MSTP技术在DVB干线传输中的应用。
Combined with the construction of DVB platform in Guangdong Province, the application of MSTP in DVB trunk transfers is introduced in detail.
结合广东有线数字电视干线传输平台建设，详细介绍了MSTP技术在DVB干线传输中的应用。
The article introduces the technique of MSTP briefly. Combined with the construction of DVB platform in Guangdong Province, the application of MSTP in DVB trunk transfers is introduced in detail.
文章就我国长途干线传输网的现状进行了分析，提出了优化意见和演进方案，最后对网络规划和标准制订工作提出了建议和设想。
This article analyses the current situation of our national long distance trunk transmission network and brings forward the optimization suggestion and evolve...
简要介绍了集传输与接入、干线与站场一体化的专用通信结构模式的全业务专用通信系统。
The paper briefly introduced a special communication system with full services, which combined transmission and access and integrated the trunk network with station and yard networks.
光纤已是长途干线的首选传输媒质。
Optic fiber is now the preferred transmission medium for long-haul trunks.
光纤传输也已成为当前通信，特别是干线通信的主要手段。
Optical fiber transmission has also become the major means of communication, particularly in the trunk communication network.
铝管外导体物理发泡射频同轴电缆主要用于有线电视系统中作干线、配线传输线。
RF coaxial cable with gas expanded, PE insulation and aluminium tube sheath is mainly used in cable TV system as trunk and distrubution transmission lines.
波分复用尤其是DWDM技术能极大拓展带宽，在长途干线上得到广泛应用，而在短距离传输中，CWDM由于其一系列特点已越来越引起人们的重视。
WDM especially DWDM is widely used in long haul network because it can extremely expand the band, however in short haul area CWDM is paid attention to be cause its properties.
准传输干线QTT ？
准传输干线QTT ？
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