牵引的

Based on the analysis of soil mechanics for a semi-track air-cushion vehicle,theoretical models for traction efficiency and total power consumption were established,and relationships between slip ratio and traction efficiency,total power consumption were examined respectively.

在分析半履带气垫车所受土壤力的基础上，建立了牵引效率和总功耗的理论模型，讨论了滑转率同牵引效率和总功耗的关系。

In recent years, through conducting market research and investigations, having interviews with customers to get acquainted to the market demands, by conducting all-round technical renovation, adopting new technology and new process to existing products, the company has developed and manufactured Series JC Electric Multi-purpose Operation Table and Series JCY Hydraulic Operation Table for Type C arm equipment, Type-JQ Multi-purpose Intermission Traction Bed, JC-CQ Bone Traction Frame and Backbone Operation Bracket, further satisfying the demands of the customers.

近年来公司通过市场调研、走访客户及市场发展的需求，我们对原有产品进行了全面技术更新，充分应用新技术、新工艺开发生产了为C型臂配套的综合电动手术台JC系列和电动液压手术台JCY系列；JC-JQ多功能间歇牵引床系列； JC-GQ骨科牵引架系列以及脊柱架。更进一步满足了用户的需求。

Methods］When scoliosis of patients were corrected to a certain degree after three weeks of halo pelvic distraction, the most serious collapsed ribs of concave side of the curve underwent a transverse incision the cross ribs. A special rib bender was used to bend the exposed 3 to 6 ribs. The bent ribs were pulled up by double-stranded 10# thick silk which was extended out through the skin and fixed in the upright post of the instrument of Halo pelvic distraction with rubber membranes.

方法］颅盆牵引3周后，脊柱侧弯矫正到一定程度时，在侧弯凹侧肋骨塌陷最重的部位，与肋骨交叉作横切口，暴露3～6条肋骨，用特制的肋骨折弯器将肋骨折弯变圆，用10号双股粗丝线将每条肋骨提起，自皮肤穿出通过橡皮膜在颅盆装置的立柱上作牵引。

On the basis of the circuit theory,electromechanics and practical state of the electrified railways,we have made up equivalent circuit of threephase traction substations and traction power supply systems and have got external performance curves.

根据电路原理和电机学的基本理论，结合电气化铁路的实际状态，构成三相牵引变电所和牵引供电系统的等值电路，得出外特性曲线。

Microprocessor-based feeder line protection equipment is regarded as one of the important components of traction power substation automation, which is fundamental to guarantee the safe and stable operation of the electric railway.

摘要牵引变电站自动化系统是保证电气化铁路安全稳定运行的基础，而微机馈线保护装置作为牵引变电站自动化系统的重要组成部分之一，具有极其重要的作用。

Currently, there are various projects for comprehensive compensation of reactive power, harmonic component and negative sequence in the traction substation of electrified railway.

目前，我国牵引变电所无功功率、谐波和负序的综合治理已有多种方案，本文结合国内重载电气化铁道朔黄线的负荷情况，通过分析多种综合补偿方案，并加以比选，得出适合朔黄线的牵引供电综合补偿方案。

Objective To find out an effective approach to treat fracture of metacarpal bone and phalanges,especially near the joint fracture.Methods Closed reduction by X-ray fluoroscopy and skeletal traction from distal part with self-designed bone tractor.

目的 寻求掌指骨骨折，特别是关节附近掌指骨骨折简便、有效的牵引和固定方法方法应用自行设计的外固定支架，在电视X-ray透视下复位，于骨折远端的指骨行骨牵引治疗，并随时调整牵引力。

Meltzerr right hand at the top of the frame.Second,he uses aBookwalter pediatric ring retractor system to keep the vaginal cavity open as the dissection progresses.Two retractors attached to the bottom of the ring maintain downward and lateral pressure wit你好n the cavity.

其次，Dr.Meltzer用了Bookwalter小儿科圆环牵引器系统来保持阴道张开，以利整个切割手术进行，环底附着的两个牵引器则维持了阴道向下和侧面的压力。

A sliding mode based optimizer and traction control system which is used for a traction control system of in wheel driven EV is developed in this paper.

改进了用于轮式驱动电动车牵引控制中最优滑移率辨识的滑模变结构优化器，设计了基于滑模变结构的牵引控制系统。

In 1941 the Royal Romanian Army ordered 221 of these Czech medium artillery tractors, which with a six-ton towing capacity were ideal all-terrain transports for medium and heavy artillery batteries; however, only 130 were received, the remainder being appropriated by Germany for its own wartime needs.

1941年皇家罗马尼亚陆军订购了221辆这种型号的中型火炮牵引拖拉机，该车具有6吨的牵引能力并能在全地形上使用。

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