基本解釋直角回轉(zhuǎn)傳動詞組短語短語belt quarter -turn drive 皮帶直角轉(zhuǎn)彎傳動quarter-turn drive更多詞組專業(yè)釋義機(jī)械工程皮帶直角轉(zhuǎn)彎傳動