短語(yǔ)詞組短語(yǔ)Dropping pills 滴丸dropping velocity 沉降速度window dropping 散佈金屬帶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(xì)繙譯dropping window 下開(kāi)窗Dropping in 串門(mén)dropping point 滴點(diǎn)；掉落點(diǎn)；空投點(diǎn) 返回 dropping