open and close valve meaning in English
开闭阀
Examples
- The valve is furnished with wobble pump and hand operated device . during repairing or having no power , it can open and close valve by hand
该阀配有手摇泵和手动关阀装置，能在检修或无电时手动开、关阀。 - Electric valves open and close valves on the electric motors as a driving force for the larger valves , electric valves , the processes can be used to control the flow
电动阀是以电动机作为启闭阀门的动力，用于比较大型的阀门，高级的电动阀，可以用于工艺上的流量控制。 - Piston - type compressors typically use the " automatic valve " that the air valve is opened and closed valves on the pressure on both sides to achieve poor , and there is no other drive
活塞式压缩机一般都采用“自动阀” ，就是气阀的开启与关闭是依靠阀片两边的压力差实现的，没有其它的驱动机构。