Moreover,metallograph examination and hardness measuring are made for the specimens and electronic probing imposition for the diffusion layer.

 
  • 結果表明,在共析溫度以下進(jìn)行催滲氮碳共滲,具有滲速快、滲層硬度高的特點(diǎn);
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan