It analyses it's characteristics and also directs and summarizes such designing of quartz crystal clock movement.

该方法对此类型石英钟机心的设计具有一定参考价值。

youdao

It analyses it's characteristics and also directs and summarizes such designing of quartz crystal clock movement.

该方法对此类型石英钟机心的设计具有一定参考价值。

youdao