短語詞組短語head pulley shaft 主滑輪軸Over Head Cam Shaft 頂置凸輪軸;頂置凸;頂置凸滑輪;頂置Over Head Cmorning Shaft 頂置凸輪軸high -head pressure shaft 高水頭壓力井道Head shaft angle 頭干角suction head shaft 吸頭軸head frame of shaft 豎井的頂架 返回 head shaft