聚乙烯球阀
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polyethylene glove valve
聚乙烯手套阀
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The superiority and structure characteristics of Polyethylene(PE) glove valve compared with metallic valve, and its shortcoming and the improvement were discussed.
论述了PE球阀的优点及结构特点，并对其不足之处进行了改进。
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