It was found that the surface free energy increase slightly after processing, while the polar component tended to decrease.

研究发现，经过处理后蚕丝的表面能有了相应提高，表面能中的极性分量却有一定的下降。

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The relationship between total polar component in oil and its dielectric constant was analyzed. the deterioration of oil with heated time and heated temperature was studied.

分析了油中的极化成分总含量与油的介电常数的关系，结果表明：提高油温、延长加热时间或长期存放都会使油的介电常数增加，从而导致油质量的恶化。

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This article analyzes the status change in the attitude control system when faults appear based on one polar orbit satellite, and provides a method to decide faulty component.

以某极轨对地观测卫星为背景，分析了姿态控制系统中单机部件出现故障时，系统将会出现的状态变化情况，找出故障部件的判定方法；

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