protraction
英
美
网络 前伸; 延长; 前突; 前凸; 前旋
英英释义
noun
- the act of prolonging something
- there was an indefinite prolongation of the peace talks
- the consequence of being lengthened in duration
双语例句
- Biomechanical study on 3-dimensional finite element model of simulated maxillary protraction after maxillary fissure repair
模拟修复上颌骨裂隙后前牵引受力的三维有限元生物力学研究 - 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。 - 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 - 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。 - 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。 - 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 - In main stress trace protraction, based on the character of main stress trace, propose an automatic method.
研究了一种简便快速的主应力迹线自动化绘制方法。 - 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。 - 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。 - 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