牵引的

BACKGROUND: Appropriate direction and angle of traction for the vertebral artery type cervical spondylosis make significant effect.

背景：适宜方向、角度的牵引对于椎动脉型颈椎病疗效显著。

Objective To compare the fuctional and morphological changes of the cervical spine of 18 patients (28 disci herniations) under different directions in herniation of cervical disc.

中文摘要：目的对18例患乾总计突出颈椎间盘28个，比较不同牵引方向对颈椎间盘突出症的颈椎功能变化规律。

Objective: To study the long-term stability of maxillary distraction with Rigid External Distractor.

目的：初步研究探讨外置式牵引成骨技术矫治重度上颌后缩畸形术后的稳定性。

The Double Eagle brand products are exported through Beijing, Shanghai, Guangzhou, Jiangsu ,Shandong etc. Main products: a series of x-ray protected products, a series of x-ray protected device products; one-off medical plastic instrument mutilated machine, vertebrae tractor, medical bed style air cushion, medical oxygen bag, medical air cushion, food tractor etc. The medical instruments are sold all over the country.

公司生产的双鹰牌防护系列产品通过北京、上海、广州、江苏、山东等外贸批量出口，打入国际市场，主要产品有：X射线防护铅胶系列产品；X射线防护装置系列产品；一次性医用塑料器具毁形机、柔软型颈椎牵引器、医用床式气垫、医用氧气袋、医用气垫、脚踏吸引器等医疗器械产品，产品畅销全国各地。

In terms of domestic indoor section posts of the electrified double-track ed railway traction network, there are more than 10 types of main electrical schemes for the primary system.

在国内复线电气化铁道牵引网运行的户内型分区所中，一次系统主接线有10余种。

Furthermore, dragline silk is elastic, which many of the man-made fibers are not.

而且，牵引丝具有弹性，这是许多人造纤维所不具备的。

At least three spiders produce dragline silk that, if spun into thicker strands, could be as strong as the nylon and carbon fibers used in high-performance aircraft.

至少有三种蜘蛛能产生牵引丝；假如把这些丝结得更粗，它们就会像用于高性能飞机上的尼龙和碳纤维那样牢固。

Based on this study, an integrated test and analysis system for tractor drawbar and noise is developed.

基于以上研究，研制了集成化的拖拉机牵引和噪声测试分析系统。

Tractor drawbar and noise test play an important role in theoretical study, performance analysis, quality appraisal of tractors.

拖拉机牵引和噪声试验是对拖拉机进行理论研究、性能分析以及对新产品作定型鉴定的最主要试验项目。

The Y-frame drawbar is constructed from two solid beams that can bear more loads.

牵引架为Y字型实心梁结构，能承受更大的负荷。

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