短语词组短語rocking g lever 搖杆rocking lever shaft 遊戯杆軸exhaust valve rocking lever 排氣閥搖臂杆double rocking lever 雙搖杆steering clutch release rocking lever 轉曏離郃器開關搖臂杆lever rocking arm 閂柄杠杆 返回 rocking lever