There is an electrical preventive maintenance task assigned to the Ground Fault Circuit Interrupter, that requires periodic testing of the unit.

应指定接地故障断路器的电气预防维护任务，此项任务要求对装置进行定期测试。

youdao

Customers can request design and maintenance of various brands of pipe and hydraulic machine circuit, the circuit.

可以根据客户要求设计及维修各种品牌弯管机和油压机的油路、电路。

youdao

Adopts safety and reliable spaceflight joint, sufficient protects the stability of the circuit. The whole circuit system, not only easy to install but also maintenance is convenient.

采用安全可靠的航天接头，充分保护电路的稳定性。整并的电路系统，不但安装简易而且维护方便。

youdao

According to the NTSB, which is investigating the crash, maintenance records show that an "impedance bond" for the track circuit where the accident occurred was replaced June 17.

CNN: NTSB says train detection system failed in days before D.C. crash

Either the withdrawal sickness rips the social fabric in two or the politicians short-circuit the turmoil, and the cure, by opting for pain management in lieu of detoxification and addiction maintenance instead of true recovery.

FORBES: Uncle Sam's My Name, And Reform Is My Game