In the initial operation of Ertan Hydropower Station, its oil, water and compression air systems occur many problems so that the new product and technology are applied to improve them.

二滩水电站投运初期，油、水、风系统先后出现了许多问题，通过应用新产品和新技术对其进行了改造。

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Coalification oxygen did not take over the station, oxygen production has been the use of mechanical compression air separation oxygen, power loss and annual maintenance cost of large equipment.

煤化公司未接管氧气站时，氧气生产一直是采用机械压缩空分制氧，每年电能损耗及设备维护保养费用很大。

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No air bubbles were present in the green ice, suggesting that the ice was not formed from the compression of snow but instead from the freezing of seawater.

绿色冰层中不含气泡，这表明了这种冰层是由冻结的海水形成的，而不是凝结压紧的积雪。

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In existing CAES systems energy is lost as heat during compression, and the air must then be reheated before expansion.

ECONOMIST: Energy storage

She does this by spraying water into the air during compression.

FORBES: 30 Under 30: Energy

That compression also slows the air down.

ECONOMIST: Jet propulsion