The switching and maintenance software is an important component and the system platform of the switch software.

交换与维护软件是交换机软件的重要组成部分和系统平台。

youdao

Switching mode power supply and battery not only make communication stations function reliably, but also are maintenance main parts.

开关电源及蓄电池为各局站的可靠运行提供了动力保障，同时也是日常维护的重点。

youdao

Routine maintenance, repair or fuse replacement etc may be performed only after powering off or switching off.

在确保切断电源及拨下电源插头的情况下，方可进行仪器的日常维护、修理或者更换保险丝等工作。

youdao