按照位错攀移模型，提出一种第二阶段蠕变机理。
A mechanism for secondary stage creep has been proposed according to the climbing model.
对于蠕变裂纹扩展的分析研究还是处于初期阶段，还有许多事情有待于认识和完成。
The analytical investigation of nonlinear creep crack growth is in its infancy and much remains to be learned and done .
本文依据试验结果建立的考虑黄土损伤效应的流变模型能够很好的描述黄土加速蠕变阶段的变形特点。
According to the test results, a rheological model that can reflect damage effect of loess is built in the paper, the model can analog accelerate deformation character well.
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