牵引

This is a report of the results of the clinical application of China-made Austin-Moore artificial femur prothese on 14 cases of femur head and femur upper section desease. Alien bone was used together with artificial femur protheses in two of these cases. Of the 14 cases, 7 were male and 7 female. The oldest was 75, and the youngest 39. The longest follow-up time was 2 years and 3 months, the shortest 5 months. One case died seven months after the operation due to fungus meningitis. One case of obsole...

本文报告应用国产Austin-Moore型人工股骨头置换股骨头及其上端病变14例，其中二例是人工股骨头加异体骨，男性7例，女性7例，最大年龄75岁，最小年龄39岁，随诊时间最长二年三个月，最短五个月，一例术后七个月，因发生霉菌性脑膜炎死亡，一例系陈旧性股骨颈骨折，因骨折周围软组织挛缩，造成术中安置人工股骨头困难而被迫放弃手术，进行骨牵引，再行第二次置换，随诊结果，功能恢复优者9例，良者2例，差者2例，其中一例术后人工股骨头松动旋转90°，一例失败。

Direct Torque Control is a novel torque controlling technique which was proposed in 1980's. Although this technique has received a successful application in high-power ac drives recently, there are also a great deal of problems in the theories and practics which deserve to research. Centring around how to find and solve these prombles, theorical analyses, computer simulation and experimental studies are carried out in this dessertation.

直接转矩控制是八十年代提出的一种新型感应电机转矩控制技术，目前该项技术在国外电力牵引中的大功率交流传动上已获得成功的应用，然而作为一项新技术，它在理论上和实践中仍存在许多值得研究和探讨的问题，本文的研究正是围绕着这些现存问题而展开的。

By making point settings and switch assignments traction control can be applied whenever necessary.

通过做点设置和开关任务牵引控制可以是应用的，每当必要。只有当节流孔从中性被移动向餵方向时，这个作用经营

These sweet and fragrant delicious foods like pixies of delicacies that they will stir your taste and lure your mind even a temporary leave.

这些看上去香甜无比、丝滑顺口的甜品，犹如美食中的小精灵，几日不食，便会搅动你的味觉、牵引你的口感。

Their 70% natural latex outsoles' wave-patterned traction grips slippery ground, and the stitched-on outsole construction increases durability while reducing the use of harsh adhesives.

其70 ％的天然胶乳outsoles '波型牵引对付地面湿滑，并缝上外建设提高耐久性，同时减少使用严酷的粘合剂。

Marc software, and analyze influence to the craniofacial complex against different strength and direction of protraction, then calculate the stress、 strain and displacement values at 320 different conditions, and finally protract the stress anddisplacement nephograms.

Marc软件模拟上颌前牵引的边界条件，分析比较了不同大小和方向前牵引力对颅面复合体的影响，计算320种工况下模型每个节点应力、应变和位移的数据。

Quasi-constant torque control is used when the speed is lower than 125 km/h, and constant power control is applied when the speed is higher than 125 km/h. Direct rotor flux oriented control system is employed and three-level neutral point clamped traction inverter with SVPWM control is adopted.

在速度低于125km/h采用准恒转矩控制，速度高于125km/h采用恒功率控制，采用直接转子磁场定向控制系统，牵引逆变器采用空间电压矢量控制的带中点钳位二极管的三电平拓扑结构。

The evolution process of landslide could be divided into 4 periods: beginning and accelerating period, quick-moving period, braking period and tamping period. The damage scope and accumulation extent are also simulated satisfactorily.

计算结果表明，根据位移和速度的变化，可把整个滑动过程分为4个阶段：即启动加速阶段、高速运动阶段、碰撞减速阶段和缓动夯实阶段；较准确的模拟了滑坡体的灾害影响范围和堆积规模；通过对滑体不同点位移和速度的分析，进一步明确了滑坡为牵引式滑坡和不同点在速度、位移和加速度上的变化规律。

Copper alloy with high conductivity and high strength is widely used for wind mill generator and pulling motor used for electric express locomotive to reach to high power and small in size.

风力发电机、高速电力机车用牵引电机等，为达到大功率、小体积的使用效果，广泛使用高导电性和高强度的铜合金。

The MG700-WD mining machine is a kind of electricity drawing and high-power mining machine, this machine's fuselage is low, installation-power is large, all electric motor are fixed up horizontally, mechanical drive is all the transmission of gear, electric motor、walking case drive wheel package etc, can take from old pool side out, so the transmission is high in efficiency, easy to install and maintain.

MG700-WD型采煤机是一种电牵引大功率采煤机，该机机身矮，装机功率大，所有电机横向布置，机械传动都是直齿传动，电机、行走箱驱动轮组件等均可从老塘侧抽出，故传动效率高，容易安装和维护。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。