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
- 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。 - 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。 - 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 - 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。 - 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。 - 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。 - 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。 - 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 - In the third part, we introduced the formation process of particle system, the Physically Based Modeling of particle system, the particle mechanics and the protraction of particle image.
第三部分详细介绍了粒子系统的构造过程，粒子系统的物理模型，以及粒子运动力学和粒子图像绘制； - 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。