... system display mode；系统显示模式 system drain valve；系统排放阀 system efficiency；系统效率 ...
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drain system valve 排水系统阀
Just open a hot water valve in a sink or shower and let the system drain.
我们只要打开浴缸或淋浴喷头的热水出水阀，把热水器的水放掉就行了。
The box cover is provided with a temperature control system, in the constant temperature box rear drain valve and an external power supply socket.
箱盖上有控温系统，在恒温箱的后部是排水阀及外接电源插座。
Should a valve need repair, depressurize and drain the system on all sides of the valve.
如果某个阀门需要维修，则降低阀门所有端口的压力并排干系统内的流体介质。
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