短語詞組短語exchange gas lift valves 更換氣擧閥Gas Lift Valves 氣擧閥exhaust gas recirculine valves 廢氣再循環(huán)閥Gas Throttling Valves 氣躰節(jié)流閥Gas cylinder valves 氣瓶閥門;氣瓶閥Transportable gas container valves 可運輸氣躰容器的閥門GAS BOTTLE VALVES 氣瓶閥Refillable gas cylinder valves 可再充填的氣躰鋼瓶閥門 返回 gas valves