常見例句雙語(yǔ)例句Mainly by the pilot valve seat, valve, diaphragm, spring, adjusting springs and other parts.導(dǎo)閥主要由閥座、閥瓣、膜片、彈簧、調(diào)節(jié)彈簧等零件組成。 返回 diaphragm valve spring seat