protraction

英

美

网络  前伸; 延长; 前突; 前凸; 前旋

医学

英英释义

noun

• the act of prolonging something
  1. there was an indefinite prolongation of the peace talks
  Synonym:prolongationperpetuationlengthening
• the consequence of being lengthened in duration
  Synonym:lengthinessprolongationcontinuation

双语例句

• Objective To study the effects of ages on combined RME and maxillary protraction therapy.
  目的研究年龄对于前方牵引联合快速扩弓矫治效果的影响。
• Objective To evaluate the treatment effect and stability of maxillary protraction and rapid palatal expansion in the permanent dentition.
  目的研究联合应用上颌前方牵引与快速扩弓对恒牙早期Ⅲ类骨性错牙合的矫治效果及稳定性。
• Protraction of manager performance is the key factor to the long-range development of state-owned industries.
  经营者行为的长期化是国有企业长远发展的关键因素。
• In addition, the most practical representation and protraction methods will be studied.
  同时，探索出最适合箱包设计的表现与绘制方法。
• Results The new anchorage implants were stable almost in every protraction experimental study.
  结果在所有实验中支抗种植体稳定性良好。
• Further protraction of the discussion will not achieve anything.
  继续讨论下去并不能解决任何问题。
• The software part uses c++ builder programmer to implement collection of data administrant of database protraction of valve's displacement curve simulation of valve's movement.
  软件部分采用C++Builder编程实现数据的采集、数据库的管理、阀片位移曲线绘制、阀片运动模拟。离线和在线设计，使用户不仅可以在线检测，还可以在离线状态观察阀片运动情况。
• Establishment of an experimental animal model of maxillary protraction and cephalometric analysis
  上颌前牵引动物模型建立与头影测量分析
• Conclusion: The orthopedic force of simulating maxillary protraction promotes the remodeling of maxillary suture and TGF-β_1 may play an important role in the remodeling of maxilla.
  结论：模拟上颌前牵引矫形力促进了上颌骨缝的改建，TGF-β1在骨缝的改建中发挥了重要作用。
• To investigate the therapeutic effects of maxillary expansion and protraction in the primary dentition.
  探讨在乳牙期利用固定扩弓矫治器前牵引的临床效果。