Their common principle is to use the variable capacity in a condenser.
它们的普遍原理是利用电容器的可变电容。
In many practical measurings of the blast stress wave parameters in rock mass by variable capacity instrument, long wire effect has been discovered.
在变电容仪测量岩体爆炸应力波参量的多次实践中，发现存在着长线效应。
In many practical measurings of the blast stress wave parameters in rock mass by variable capacity instrument, long wire effect has been discovered.
在变电容仪测量岩体爆炸应力波参量的多次实践中，发现存在着长线效应。
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