微观裂纹 meaning in English

micro crack
microfi ure
microfissure

At the same time , the fatigue behavior of the liner has also been improved due to the reduction of the stress concentration and micro - break on the inner surface
内表面采用特殊工艺处理，物理机械性能明显改善，消除了表面应力集中及微观裂纹，铝胆的疲劳性能得到提高。
The method of prediction is mainly basis of through collecting data to analyze based on probability and mathematics statistic or based on the expand of the microcosmic crack for some component
采用的方法主要是通过采集数据以概率和数理统计为基础进行分析预测，或者以微观裂纹的扩展为基础对某个元件进行预测。