尖端两边的相的差异使得电流流过尖端，它对于下面分子轨道的相的改变非常灵敏。
That phase difference from one side of the tip to the other makes the current running through the tip sensitive to changes in the phase of the orbital of the molecule below, too.
针对直流电力牵引区段车辆段轨道电路中的信号电流存在的迂回问题，提出了在工程设计中的防范措施。
For the problem of signal current bypass with track circuit of rolling stock depot in DC electric traction sections, the paper provides measures to prevent it.
电力牵引区段的两条钢轨，既作为轨道电路的通道来传输信号电流，又作为牵引电流的回路来传送牵引电流。
The two rails are not only signal lines of track circuits, but also loop current line of locomotive traction current in electrified railway block.
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