随着人们对生态环境和绿色能源日益增长的关注，电力系统环境的净化势在必行。

For growing concerns about the ecological environment and the green energy, a smooth environment of power system is required.

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网络道德行为失范的解决不仅要靠社会大环境的净化，还有赖于全民的传媒素养的提高。

The solving of loss of moral behavior of Internet depends on not only the purify of the social environment but also improving of the quality of the media.

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同时，阐述了PAN原丝油剂及生产过程中原料的纯化及生产环境的净化对原丝质量的影响。

Finish oils of PAN precursor and effects of the purification of raw materials and the decontamination of production environments on its quality are also narrated.

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