1. And developing new 'auxetic' materials which get fatter when you stretch them.
和开发新的'胀'材料，当您获得更丰厚的拉伸他们。
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2. The microstructure of a multiphase material was optimized, and property of auxetic performance was obtained, helping to prove the validity of this method.
3. The microstructure of a multiphase material was optimized, and property of auxetic performance was obtained, helping to prove the validity of this method.
