在系统回路中必须采用屏蔽信号电缆，并可靠接地。

Shielded signal cable must be used in system loop, and must be grounded firmly.

youdao

在系统回路中必须采用屏蔽信号电缆，并可靠接地。

Shielded signal cable must be used in system loop, and must be grounded firmly.

youdao