During the construction, we should consider firstly how to make use of all medium resources to improve the signal quality of the main classroom.
在建设过程中，必须首先考虑充分利用各种媒体资源，提高主课堂的信号质量。
2
This paper introduces some problems existing in the process of railway signal cable construction, and in the light of these problems, advances some corresponding improving methods.
主要介绍了铁路信号电缆施工过程中存在的一些问题，并针对这些问题提出了相应的改进办法。
3
Abstract: : the railway signal is command the parameters of the brain and nervous, so railway signalof the engineering construction quality is very important.