“牙宣”的概念、定义、翻译、参考文献-科学参考

单词	牙宣
释义	牙宣 Encyclopedia 医学〔口腔病证〕释 periodontal disease牙宣以龈肉萎缩、齿根宣露、牙齿松动、经常渗出血液或脓液为特征的牙科病证。出现本病若不及时治疗，日久牙齿会因失去气血濡养而脱落。本病相当于现代医学的牙周病。
随便看	back-illuminated image sensor backing backing layer materials of patches backing-off backing store backlash backleg back light backlight backlit view back lobe backlot Backlund Backlund crater Backlund transformation back mixing back mutation back-off backoff back-off system back-of-the-book index backpack dynamic planning backpacker tourism backpack of Lahu nationality backpaddle

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。