drop holes信息详情
落差孔
holes───n.(Holes)人名；(匈)霍莱什；n.小孔；破洞（hole的复数）
drop───n.滴；落下；空投；微量；滴剂；v.推动；帮助；宣扬；下降；终止
big holes───大径钻孔
air holes───气孔；河中不冰冻部分
glory holes───n.炉口；（船员）放东西的地方
e holes───e孔
black holes───n.黑洞( black hole的名词复数 )
small holes───小孔
swimming holes───游泳池
formula calculating the pressure drop of series throttle holes in the liquid propellant transporting system is given in this paper.───文中还给出了液路系统中各串联节流孔压降公式。
Gas concentrations drop, and the effective gas drainage period of holes is shortened, because pores and cracks in the coal seam become completely developed after gas drainage.───煤层钻孔抽放瓦斯后煤层孔隙裂隙发育致使瓦斯浓度下降，钻孔有效抽放期缩短的技术难题，首次提出二次封孔方法。
Once you're on the ice, you drill your holes, line up the holes that are inside the Wilcraft, and press a couple switches to drop the hull onto the ice.───一旦你在冰面上，整齐的地钻一排冰洞都由Wilcraft内部完成，随后按一个双向开关把船体拖放到冰面上。