短語(yǔ)詞組短語(yǔ)pilot relief valve 導(dǎo)向排泄閥;液控溢流閥;液壓安全閥remote pilot relief valve 遠(yuǎn)距離先導(dǎo)減壓閥double pilot check valve 二級(jí)先導(dǎo)式單向閥stick pilot control valve 斗桿先導(dǎo)操縱閥left pilot control valve 左先導(dǎo)控制閥pilot check valve group 先導(dǎo)單向閥組件pilot overspeed valve 先導(dǎo)超速閥pilot control valve component 先導(dǎo)控制閥部件pilot servo valve 先導(dǎo)伺服閥 返回 pilot valve