The principle and method for testing surface crack through direct current potential difference are introduced.

首先介绍了直流电位法——裂纹扩展片检测裂纹的方法和原理。

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The principle and method for testing surface crack through direct current potential difference are introduced.

首先介绍了直流电位法——裂纹扩展片检测裂纹的方法和原理。

youdao