请输入您要查询的字词:

 

单词 crack
释义
crack

Physics
  • A flaw in the surface (or just below the surface) of a material. Cracks at the microscopic level can have a large effect on the mechanical properties of a material because they concentrate stress. In crack growth there is an increase in energy due to new surfaces being generated but this is more than compensated for by a reduction in energy due to stress relief. This means that if there is sufficient energy stored round the crack it is energetically favourable for the crack to grow, and hence for the material to be ruptured.


随便看

 

科学参考收录了60776条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。

 

Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号 更新时间:2024/12/25 1:43:09