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

• Analysis of stress on craniofacial skeleton sutures under protraction with three-dimensional finite element method skeletal traction through olecranon of ulna
  前方牵引下颅面复合体骨缝应力特征的三维有限元分析尺骨鹰嘴骨牵引；经尺骨鹰嘴骨牵引术；经尺骨鹰嘴骨牵引术
• 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
• To evaluate the treatment effect of maxillary protraction on skeletal class ⅲ high angle cases in mixed dentition.
  【目的】探讨上颌后牙牙合垫联合前方牵引治疗替牙期骨性Ⅲ类错牙合高角病例的效果及矫治机理。
• The Research and Automatic Protraction of Flux Tendency Line Based on GIS Technology
  基于GIS的流量倾向线的自动绘制与研究
• 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。
• 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。
• Conclusion It is obvious that age affects the results of RME and maxillary protraction therapy.
  结论年龄对于前方牵引联合快速扩弓矫治效果有较为明显的影响，矫治后上颌骨以及下颌骨的位置均与年龄有关。
• Design and Protraction for Oil Well Structure Drawing Based on Visual Basic
  基于vb的油井结构图设计与绘制
• Objective To study facial soft tissue changes after maxillary protraction treatment in Class III malocclusion with maxillary deficiencies.
  目的：评价上颌前牵引早期矫正上颌发育不足产生的骨性Ⅲ类错（牙合）后的侧貌美学改变。
• Conclusion vertical control was good in jaw bone and was not effective in dentition when applying maxillary protraction combined with rapid expansion.
  结论联合上颌前方牵引及快速扩大方法对颌骨垂直向控制较好，但对牙齿垂直向控制较差。