Though PE class is a part of children's education, many teenagers didn't form the habit of doing exercise, they don't have interest in sports.

虽然体育课是孩子教育的一部分，很多青少年没有形成体育锻炼的习惯，他们对体育没有兴趣。

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Adhere closely to the surface of steel pipeline, PE- Coating , CTE-Coating and FBE-Coating on steel pipeline, and form a continuous close anti-corrosion system with the surface of the pipeline.

与钢管表面、环氧涂料及PE等表面形成良好的粘接，与管外表面形成连续紧密的防腐体系；

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It can draw the following conclusions form this experiment: 1. Calcium carbonate, kaolin clay and starch of filling have greatly influence on properties of PE film.

本论文从实验得到以下主要结论：1、碳酸钙、高岭土和淀粉填料对聚乙烯微孔薄膜性能影响很大。

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