Fan is a kind of driven fluid machinery, which depends on the input mechanical energy to increase the gas pressure and discharge the gas. Gas compression and gas transmission machinery is a machine that converts rotating mechanical energy into gas pressure energy and kinetic energy, and transmits gas.
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国家电力投资集团有限公司(简称“国家电投”)是中央直接管理的特大型国有重要骨干企业,肩负保障国家能源安全的重要···