高锟发现，光信号可通过玻璃光纤进行长途传输。
Mister Kao discovered how to transmit, or send, light signals over long distances through optical glass fibers.
因为地球是圆的，它是不可能通过直接发送长途传输的电视直播。
Because the earth is round, it is impossible to send live television by direct transmission over a long distance.
在广西电信长途传输局的各项日常工作中，光缆维护无疑是核心工作。
In daily management works of the GuangXi Telecom Transmission Bureau, the optical cable maintenance is the core work doubtless.
滕特公司的线塔或许很重要的第二个原因是尽管存有那些问题，但是大量的长途传输线路需要架设。
The second reason TenneT’s pylons may be important is that despite these problems a lot of new long-distance-transmission lines are going to have to be constructed, soon.
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.
随着城域传输网的演变和对带宽的需求，密集波分复用技术将由长途骨干网进入城域传输网。
With the evolution of metropolitan transmission network and the bandwidth requirement, DWDM technology will be entered into metropolitan network area from long haul backbone network.
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.
结合目前我国长途骨干传输网上主要电信运营商的传输网络的网络拓扑现状，对其网络保护方案进行了分析。
Combined with topologies of major telecom operators' transmission networks of long -distance backbone transmission networks in China, it analyzes its network protection solution.
T104测试线。用于双向传输损耗测量，由远至近噪声测量以及通常用于测试长途中继线的由远至近的噪声。
The T104 test, used for two-way transmission loss measurements, far-to-near noise measurements and near-to-far noise checks is normally used in testing toll trunks.
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...
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...
应用推荐