短語詞組短語proportional direction throttle valve 比例方曏節(jié)流閥electrohyeraulic proportional direction throttle valve 電液比例閥electrohydraulic proportional direction throttle valve 電液比例方曏節(jié)流閥way proportional throttle valve 二通比例節(jié)流閥Water hydraulic proportional throttle valve 水壓比例節(jié)流閥Electro -hydraulic proportional throttle valve 電液比例節(jié)流閥 返回 proportional throttle valve