The text introduces the construction process of vault tank air- rise invertmethod, analyses its mein points and notes.
通过对拱顶罐气顶倒装法施工过程介绍，分析气顶倒装法施工要点和注意事项。
2
The most common method to "pump" a gas laser--that is, to invert the population in the states that give rise to light amplification--is to use a gas discharge .
“发射”气体激光（也就是反转能产生光放大的那些状态的粒子数）的最普通方法是运用气体放电。
3
We apply finite element method to invert the velocity field and strain field of crust motion in Urumqi region with GPS observational data since 2000.