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 upon neural networks, a nonlinear mathematical model of the protraction for the die - bolt is developed.
基于神经网络建立热膨胀螺栓形变的非线性数学模型。
Based upon neural networks, a nonlinear mathematical model of the protraction for the thermal expansion die bolt is developed.
基于神经网络建立热膨胀螺栓形变的非线性数学模型。
The tape is used to prevent excessive protraction injuries, for example, shoulder problems from activities including playing tennis.
这种贴布能防止过度拉伤，比如打网球等造成的肩膀问题。 。
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。
Objective To investigate the changes of hard tissue changes in vertical dimension when applying maxillary protraction combined with rapid maxillary expansion.
目的研究联合应用上颌前方牵引及快速扩大对硬组织垂直向的作用。
Inflammation plays an important role in the process of the occurrence and agglutination of surface ulcers, which has marked effect on damage protraction and recovery of local ulcers.
在体表溃疡的发生与愈合过程中，炎症自始至终发挥着重要的作用，不仅造成溃疡局部的损伤迁延，更影响溃疡的恢复。
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. And some countermeasures are given hereof.
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。
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. And some countermeasures are given hereof.
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。
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