detail pen for double lines 划双线笔
the double lines 双重线条
Double lines AFS 双道原子荧光光谱
parallel double lines 架空双回线
A double lines distance relay based on the zero sequence components is presented.
提出了适用于平行双回线路的零序距离继电器新判据。
During the time course of "window" on electrified double lines, passenger train should be organized to run in reverse direction.
在双线电气化铁路“天窗”时间内，组织旅客列车反方向行车。
In this article, authors state construction technology study achievements gained in construction of the Huxiuling double lines multi-arch tunnel and their application.
本文就修建岵岫岭双线连拱隧道过程中开展的施工技术研究成果和应用情况做了介绍。
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