The results show that gradient hard coatings on cermet substrate and the cohesion are ideal.Surface hardness is improved, but the transverse rupture strength does not change.是什么意思_The results show that gradient hard coatings on cermet substrate and the cohesion are ideal.Surface hardness is improved, but the transverse rupture strength does not change.在線翻譯_英語_讀音_用法_例句