影响行车的安全性和舒适性的一个重要环节，就是路基与桥隧等结构物的连接地段——过渡段问题。
An important link of impacting traffic safety and comfort is the transition issues of the subgrade and bridge.
安全地接地极与PDP中安全地汇流母线的连接电缆大于等于100平方毫米?。
The connecting cable from the ground rod to the SG bus bars in PDP cabinet is equal to100 Square millimeters or larger ?
本文着重对工业供电系统电气设备的接地、接零及漏电保护的原理与安装方法等作了详尽的介绍，旨在确保用电安全，防止触电事故的发生。
This article goes into details on the principle and assemblage of earthing, zeroing and leakage prevention with the view of ensuring power supply safety and hindering electric shock accidents.
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