The results verified that nanometer pa possessed superior physical properties such as rigidity, heat resistance and transparency, which could be used for replacing pa 6 as basic resin material.

试验证明，纳米pa具有更好的刚性、耐热性、透明性等性能，完全可以替代PA 6作为基础树脂用料。

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Children also showed improvement in hearing, skeletal rigidity or cardiovascular changes such as decreased arterial stiffness and improved vessel-wall density.

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