短語(yǔ)詞組短語(yǔ)rotary y throttle valve 廻轉(zhuǎn)節(jié)流閥Rotary throttle valve carburetor 發(fā)明名稱(chēng)rotary throttle rotary throttle valve 廻轉(zhuǎn)節(jié)流閥 返回 rotary throttle valve