Also it analysed the cause of the faults of the electronic displaying ruler in sound speed measuring unit.

对于声速测定仪中电子数显尺的常见故障原因进行了分析，并总结出维修方法。

youdao

Also it analysed the cause of the faults of the electronic displaying ruler in sound speed measuring unit.

对于声速测定仪中电子数显尺的常见故障原因进行了分析，并总结出维修方法。

youdao