用表面屈服强度这一新指标，可以对材料表面进行研究。

Accept defeat this new index of strength with the surface, we can research the material surface.

youdao

用表面屈服强度这一新指标，可以对材料表面进行研究。

Accept defeat this new index of strength with the surface, we can research the material surface.

youdao