The evolution of damage is determined by damage hardening condition, failure occurs when the hardening of damage reaches its critical value.
损伤演变由损伤强化条件决定，当损伤强化达到临界值时，混凝土发生破坏。
This impervious layer or boundary will retard the free diffusion of moisture. This condition is referred to as case hardening.
这一不透气的壳层(或边界层)会阻滞水分自由扩散，这种情形称为表面硬化。
The deformation and stress condition of the micro-composite are studied according to the shear-lag theory and strain-hardening law.
按照剪切滞后理论和应变硬化规律，研究微复合材料的变形和应力状态。
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