At last, the paper presents application of technology of new materials HDPE file in preventing frozen damage in environmental health engineering.

最后，介绍了新型材料HDPE膜技术在环境卫生工程中预防冻害的应用。

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Excited by the possibilities of her recent research results, Karen, a chemical engineering professor, decided it was time to file for patents on her new surface chemistry technology and create a business with a faculty colleague and two graduate students.

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