英语语法分析

The technique of polyvinylidene fluoride(PVDF) pipe microporous films production has been studied.

对聚偏氟乙烯（PVDF）管式微孔膜生产工艺进行了研究。

The invention discloses a method to made polyvinylidene fluoride copolymer gel state electrolyte membrane.

本发明提供了一种聚偏氟乙烯共聚物凝胶态电解质膜及其制备工艺。

The results show that the thermal stability and machine intensity were improved compared to Polyvinylidene Fluoride membrane.

结果表明，与聚偏氟乙烯膜相比，改性膜的热稳定性和机械强度均有所提高。