查询词典 protraction

At the same time, on the base of self-developing 3-D finite element models of craniofacial complex, this article explores the change rule of stress、 strain and displacement of craniofacial complex against different strength and direction of maxillary protraction.

同时在自主建立的颅面复合体三维有限元模型基础上，探讨了不同大小和方向的前牵引力对整个颅面复合体的应力、应变和位移变化规律，以期达到为临床力系统选择提供科学依据的目的。

Decrease of PS content in bronchoalveolar lavage fluid in children with pneumonia may be one of important factors contributing recurrance or protraction of the disease. PSsubstitution is an effective therapy for pneumonia.

肺炎病儿肺泡灌洗液中PS降低，可能是导致肺炎反复或迁延不愈的重要原因之一，PS替代疗法是肺炎的一种有效的辅助治疗手段。

Blood protraction and tasting blood glucose were tested at baseline and 8 weeks after treatment.results: both medicines had comparable efficacy.

将符合ccmd-3精神分裂症诊断标准的60例患者随机分为阿立哌唑组和利培酮组进行治疗，分别在治疗0、2、4、8周末评定panss和tess量表，在0、4、8周末检查心、脑电图和肝、肾功能。

Study shows that the size of crystallite gets larger with the rise of temperature, while the influence of protraction of calcination time seems less significant.

XRD分析表明，当焙烧温度为300~800℃，焙烧时间为0.5~1.5h时均可以得到纳米晶CeO2，随着焙烧温度的提高，CeO2晶粒迅速长大，而延长焙烧时间对晶粒长大的作用较小。

Some clinically obvious phenomena are difficult to explain using this model system, for example, the phenomenon traditionally referred to as the "row-boat effect", where uprighting of the canines excessively tipped into an extraction site results in protraction of the molars and "anchorage loss".

一些临床上明显的现象是难以解释利用该模型系统，例如，传统的现象称为"行船效应"，在扶正的犬齿过分倒进萃取结果冗长的网站的臼齿和"锚固损失"。

BACKGROUND: Researches show that erythropoietin can stimulate the proliferation and protraction of endothelial progenitor cells to form new vessels, so EPO may play an important role in proliferation and differentiation of bone marrow-derived mesenchymal stem cells.

背景：促红细胞生成素能够促进内皮祖细胞增殖、迁延形成新生血管，因此促红细胞生成素可能在骨髓间充质干细胞增殖分化中起重要作用。

During anti Japanese War in China's rear areas, a group of large and medium sized enterprises appeared owing to moving factories into the inland, expanding and combining the original enterprises, and running new ones to meet the need of the protraction of the war.

抗日战争时期，基于持久抗战的需要，通过厂矿内迁、原有企业扩充与合并、新建企业的发展等途径，在后方地区涌现了一批引人注意的大中型企业。

The main mechanism of nitrogen in wetland systems is the action of microorganisms,while the removal efficiency will increase with the protraction of HRTin wetland,and also the action has a close relationship with the alternant changes of DO formed by the undee flowing.

湿地系统除氮的主要机制在于微生物的作用，随停留时间的延长湿地系统对氮的去除效率增加，且该作用与波形水流状态所形成的溶解氧交替变化有关。

Both assessments resulted in minimal scapular protraction (~3.5°).

两种方法都做到了肩胛前倾最小化(~3.5°)。

The obvious skeletal change can be achieved with the mandibular protraction applicance treatment in early class Ⅱ malocclusion.

下颌前伸矫治器治疗早期Angle二类错牙合可取得明显的骨骼改变。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐