1)closed centered control valve,自动回位闭心控制阀2)closed centered implement valve,自动回位闭心机具阀3)Automatic reflux control valve,自动回流控制阀4)closed centered position,自动回位闭心位置5)automatic return water switch valve,回水自动启闭阀6)automatic phase control loop,自动相位控制回路
用法和例句
The design and lectotype of circulating pump, automatic return water switch valve, expansion tank and atmospheric connection pipe in atmospheric hot water heating boiler room are discussed.