The technique of measurement of growth, rate of fatigue short crack with indirect KC (IDC) potential system and AC potential system was investigated.
木文研究了间接直流电位法（IDC法）和交流电位法（AC法）用于监测疲劳短裂纹扩展速率的有关技术问题。
Soft measurement technique is a method to estimate process Variables hard to measure directly through indirect method.
软测量技术是通过间接方法实现对不易直接测量的过程变量进行估计。
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