然后应用数学物理方法，经过一系列的数学演算过程，最后得出描述各类环形管网内气体不稳定流动规律的数学表达式。
After making a lot of mathematical calculations by use of the mathematical-physical method, the formulas describing the gas unsteady flow in various loop networks are obtained.
这是我国沿新疆准噶尔盆地建成的第一套环形输气管网。
This is China's Junggar Basin in Xinjiang built along the first set of annular gas pipeline network.
这是我国沿新疆准噶尔盆地建成的第一套环形输气管网。
This is China's Junggar Basin in Xinjiang built along the first set of annular gas pipeline network.
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