Poly(p-dioxanone) has high degree of crystallinity which limited it to copolymerize with other monomers to be used as controlled drug release materials.

但聚二氧六环酮的结晶度较高，不适合直接用做药物控释材料，需要与其他单体进行共聚以改善其亲水性和结晶性等性质。

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Poly acrylonitrile (PAN) hollow fiber membrane is a kind of high additional-valued functional fiber which has been applied in many fields.

PAN中空纤维膜是一种具有高附加价值和广泛用途的功能纤维。

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In connection with the poor processibility of high polymerization degree poly (vinyl chloride), chemical and physical methods for improving its processibility were reviewed in this paper.

针对高聚合度聚氯乙烯加工性能较差的缺点，综述了改进其加工性能的化学和物理方法。

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It's these high-tech poly strings that allow pros to swing for the fences and have the balls drop in because of the bite and hyper topspin the strings generate.

WSJ: Roger Federer: With Tennis Rackets, He Strings Them Loose