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
- 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 - Sagittal airway dimensions following maxillary protraction in 30 cases
前方牵引器治疗对上气道影响30例观察 - In addition, the most practical representation and protraction methods will be studied.
同时，探索出最适合箱包设计的表现与绘制方法。 - 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 - 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。 - 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 - 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。 - 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。 - 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。 - 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。