For collisional high lying state population, injection of buffer gas will be the key function to high lying state population.
对于主要通过碰撞实现高位能级布居的过程，加入缓冲气体对高位能级布居起关键作用。
State the total area of 45 thousand square kilometers, Qinghai-Tibet Plateau and the Loess Plateau in the transitional zone, the high-lying north-west, south-eastern low.
全州总面积4.5万平方公里，处于青藏高原和黄土高原过渡地带，地势西北部高，东南部低。
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