基本解釋[經(jīng)濟學]廻轉節(jié)流閥詞組短語短語rotary y throttle valve 廻轉節(jié)流閥Rotary throttle valve carburetor 發(fā)明名稱rotary throttle rotary throttle valve 廻轉節(jié)流閥rotary throttle valve更多詞組專業(yè)釋義經(jīng)濟學廻轉節(jié)流閥