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。
This paper summarized the characteristics of physic mechanical properties of aerospace structural materials and the testing technique at cryogenic temperature conditions.
概述了航天结构材料在深低温条件下的力学、物理特性及深低温力学性能研究的内容和特点。
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