短語詞組短語Dropping pills 滴丸dropping velocity 沉降速度window dropping 散布金屬帶dropping equipment 降壓裝置dropping characteristic 下降特性;陡降外特性dropping line 垂墜腰線dropping assembly 詳細翻譯dropping window 下開窗Dropping in 串門dropping point 滴點；掉落點；空投點 返回 dropping