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1·Short fatigue crack propagation is much accelerated by filled hydrogen.

充氢条件下，大大加速短裂纹疲劳扩展。

2·Tempering temperature remarkably affect the threshold value of fatigue crack propagation.

回火温度对该钢的疲劳裂纹门槛值影响显著。

3·A distribution function of two dimensional threshold is given for fatigue crack propagation.

本文给出二维疲劳裂纹扩展门槛值分布函数，建立二维应力—门槛值干涉模型。

4·The temperature of duplex annealing has little influence on fatigue crack propagation behavior.

该合金的疲劳裂纹扩展速率对退火温度不敏感。

5·The fatigue crack propagation rate of the fusion line and weld toe are greater than that of the others.

熔合线和焊趾处疲劳裂纹扩展速率较其他部位大。

6·The formula of the fatigue crack propagation rate was directly derived from the fatigue damage criterion.

通过疲劳损伤准则，导出疲劳裂纹稳定扩展速率的计算公式。

7·Fatigue crack propagation in a compressive residual stress field can be characterized with the closure effect.

疲劳裂纹在残余压应力场中的扩展可借助于裂纹闭合力来描述。

8·The equiaxed structure has good tensile property, low fracture toughness and high fatigue crack propagation rate.

等轴组织具有较好的拉伸性能、低的断裂韧性和高的疲劳裂纹扩展速率；

9·The fatigue crack growth rate is the core for predicting fatigue life by use of fatigue crack propagation (FCP) theory.

疲劳裂纹扩展率表达式是采用疲劳裂纹扩展理论预报疲劳寿命的核心。

10·An automatic compliance crack length measurement system for fatigue crack propagation test was used in the experiments.

研究中应用了一种柔度法疲劳裂纹自动测量系统进行裂纹长度测量。