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

• 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
• 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。
• 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。
• 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
• 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。
• 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。
• Comparison with the Effect of the Skeletal-dental and Soft Tissue Profile Changes of Maxillary Protraction with Labiolingual Appliances or Rapid Maxillary Expansion Appliances
  唇舌弓式及快速扩弓式上颌前方牵引口内装置对牙颌面及软组织侧貌影响的比较
• Based on the practice, discussion is made on the protraction calculation for the prestressed reinforcement tensile, and analyzed several calculations including the regulation type.
  结合工程实际，对预应力张拉控制中预应力筋的伸长量测算进行了探讨，提出了包括规范推荐法在内的多种测算方法，对各种方法的原理及选用作出了较全面的分析。
• 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
• Biomechanical study on 3-dimensional finite element model of maxillary protraction and the palate expansion
  上颌前牵引联合腭部扩弓的三维有限元生物力学研究