If a stratum of air saturated with moisture meets a very cold one, the fog begins to freeze, and becomes specks of snow.
如果含水量达到饱和状态的空气遇到了非常冷的另一团空气，空气中的原先呈雾状的水分就开始凝结变成小的雪粒。
Hence it is understood now, that the particles of water in the air form fog, or, which is the same, clouds, so soon as they come into a colder stratum.
现在我们知道了，空气中雾或者云都是同样的东西，都是空气中的水分突然遇冷以后呈现的状态。
Introducing into air drilling, nitrogen drilling and air percussion drilling were applied in Puguang upper continental facies stratum; moreover, drilled successfully into Xujiahe group stratum.
引进空气钻井、氮气钻井、空气锤冲击钻井在普光气田上部陆相地层试验和应用，并成功拓展到须家河组地层。
应用推荐