Downtonn.唐顿
downadv.向下prep.沿着 ... 而下adj.向下的;消沉的;无礼的n.绒毛;汗毛v.击倒;打败;吞下;被抑制
downhole isolation technology井下隔离技术
downhole non - return valve井下止回阀
Downrange Antimissile Program下靶场反导弹计划
Downed Aircraft Recovery Team下靶飞机防御队
downhole blasting and burning井下燃爆
Downed Aircrew Locator System飞行机组向下定位系统
Down around the dungeon doors在主塔的大门周围
down to earth salt production地下岩盐开采
Downed Aviator Locator System飞行员向下定位系统