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

• 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。
• 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。
• 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。
• 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
• Development of the loop-mediated isothermal amplification assay for Toxoplasma gondii Upper arch changes after maxillary protraction with rapid palatal expansion in skeletal Class ⅲ patients by anchoring to the primary teeth
  弓形虫环介导等温扩增快速检测方法的建立乳磨牙为支抗前牵引矫治后上牙弓变化的初步研究
• This question of "for whom?" is fundamental; it is a question of principle. This is exactly one of the fundamental reasons why the Taiwan issue is characterized by protraction and complexity.
  为什么人的问题，是一个根本的问题，原则的问题。这正是台湾问题具有长期性、复杂性的根本原因之一。
• Based on the analysis of distortion and protraction of warp and form of shedding, the problem that dobby can not fully develop its capacity is located.
  通过对开口时经纱变形伸长特性和开口形式的分析，指出了多臂机不能充分发挥效能的问题所在，并给出了解决办法。
• Objective: To investigate the effectiveness of the mandibular Protraction appliance in the treatment of class ⅱ malocclusion.
  目的：了解下颌前伸矫治器（MandibularProtractionAppliance，MPA）对AngleⅡ类错牙合的治疗效果。
• 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。