The materials with metastable structures, e. G., nanostructure and supersaturated solid solutions, have unique physic, chemical and mechanical properties, and get extensive application in many fields.
具有纳米晶、过饱和固溶体等亚稳态结构的材料具有独特的物理、化学及机械性能，因而在诸多领域获得了广泛的应用。
Polyimide, which has outstanding heat resistance and mechanical properties, is one of the most heat-resistant materials in resin matrix composites at present.
聚酰亚胺具有突出的耐温性能和优异的机械性能，是目前树脂基复合材料中耐温性最高的材料之一。
One example is the increase in surface area to volume ratio altering mechanical, thermal and catalytic properties of materials.
一个例子是增加面积，以体积比改变机械，热及催化性能的材料。
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