Statistics of gas in place, gas-bearing area and reservoiring period of over 60 large and medium gas fields in China show that their accumulation efficiencies vary greatly.
中国60余个大中型气田天然气地质储量、含气面积和成藏时期的统计结果表明，中国大中型气田的聚集效率差别很大。
The Upper Paleozoic is the major gas-bearing series of strata in Ordos basin, where gas accumulation is controlled by facies belts and all the major pay zones are of delta sedimentary systems.
上古生界是鄂尔多斯盆地重要的含气层系，天然气的聚集受相带的控制，其主产层均为三角洲沉积体系。
Therefore, when selecting the installation position of the pump, the heat quantity of the pump cover and the bearing seat is easy to spread, and no heat accumulation phenomenon occurs.
因此选择泵的安装位置时，要使泵盖和轴承座的热量便于扩散，不出现任何蓄热现象。
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