这种方式定位准确，能有效阻止标准节水平方向的位移，接点稳定性好，故目前采用较多。
This method is accurate, can effectively prevent the standard section of the horizontal displacement of the direction of the contact stability is good, so the current use of more.
这种方式定位准确，能有效阻止标准节水平方向的位移，接点稳定性好，故目前采用较多。
This method is accurate, can effectively prevent the standard section of the horizontal displacement of the direction of the contact stability is good, so the current use of more.
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