The results show that the teeth surface damage was the shallow layer strip resulted from adherent abrasion.

 
  • 結果表明,齒面損傷是粘著(zhù)磨損導致的淺層片狀剝落,齒的斷裂起源于剝落處,為脆性疲勞斷裂。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan