液压

All over the word, the name liebherr stands for a technically advanced, benefit-oriented range of products and services.for the construction industry the extensive product program comprises construction cranes, truck and mobile cranes, crawler cranes, hydraulic excavators and hydraulic rope excavators, wheel loaders, crawler tractors and loaders, mining trucks, concrete mixing plant and truck mixers; liebherr's products for cargo handling include ship, offshore, container and mobile dock cranes; the machinery and plant range encompasses machine tools, material flow technology and engineering projects; the aircraft equipment comprises landing gear, actuation and air-management systems; transport technology equipment comprising air conditioner for tran rapid in shanghai and other trains; in the domestic appliances area, liebherr specializes in refrigerators and freezers, with a range of more than 300 principal models.

在全世界范围内，利勃海尔这一名词代表着先进的技术、高性能的产品和优质的服务。n用于建筑工业的产品有塔式起重机、轮胎式和汽车式起重机、履带式起重机、液压挖掘机和液压钢绳式挖掘机、轮式装载机、履带式推土机和履带式装载机、矿用自卸车、混凝土搅拌站和搅拌运输车等；利勃海尔用于货物转运的产品包括船用、钻井平台、集装箱式起重机；机械加工和工厂建设方面有机床、物流设备和工程项目；航空设备包括起落架、作动器和空气调节与管理系统、运输技术准备主要包括上海磁悬浮列车和其他火车用的空调器等；家用电器方面，利勃海尔专业生产基本型号达300余种的冷冻与冷藏设备。

The controller controls the velocity of swing motor by the means of meter-in to track the output velocity of rotary stage of the optimal regulator, so that the load sway can be controlled during swing operation.

最后，本文设计了回转液压回路模糊控制器，以换向阀节流调速的方式对液压马达转速进行模糊控制，使起重机回转平台跟踪最优调节器输出的转速，实现对吊重摆振的控制。

Water hydraulic valve was the key component of water hydraulic technology.

纯水液压控制阀是纯水液压技术的关键基础件。

Company covers an area of 6900 square meters, is a design, development, manufacture, sales and service in one car from our series products, hydraulic valve series, oil pump gear products, self-suction pump sprinkler products and related to the professional company of hydraulic components.

公司占地面积6900平方米，是一家集设计、开发、制造、销售、服务于一体的汽车取力器系列产品，液压阀系列产品，油罐车齿轮油泵产品，洒水车自吸式水泵产品及相关的液压部件的专业公司。

The flow force is the important factor for designing and analyzing both the control valve and the hydraulic system.

液动力是设计、分析液压控制阀及液压系统考虑的重要因素之一。

Pressures and temperatures in the hydraulic system of the 50 type wheel loader were measured under different operating conditions to solve the overheating problem of the loader working in summer.

解决某50型轮式装载机夏天工作中液压系统过热问题，测量了该装载机液压系统在各个工况下的压力和温度。

It makes a design of pile clamping device with two-position pile clamping cylinder and self-alignment cylindrical surface.

本文简述了抱压式液压静力沉桩机的压桩工作原理，分析了作业时预制桩的破坏机理，设计了一种双层夹桩液压缸、柱面自动调心式的夹桩机构，并在ZYB系列桩机上应用，经实践检验获得了很好的效果，基本上避免了夹坏桩现象的发生。

METHODS: According to the characteristics of hydraulic fluids and processing technology, new type of micro-structure of the digital throttle and unique structure of the two-cylinder piston had been applied to the damper.

该阻尼缸根据液压流体特性和加工工艺设计，通过采用了一种新型微结构数字节流阀以及独特的双活塞液压缸结构，可以实现膝关节伸展与屈曲的双向自动控制，从而使改善假腿步态的对称性。

METHODS: According to the characteristics of hydraulic fluids and processing technology, new type of micro-structure of the digital throttle and unique structure of the two-cylinder piston had been applied to the damper. It could control extension and flexion of the knee joint in two-way automatically, which improved the gait symmetry of artificial limb.

该阻尼缸根据液压流体特性和加工工艺设计，通过采用了一种新型微结构数字节流阀以及独特的双活塞液压缸结构，可以实现膝关节伸展与屈曲的双向自动控制，从而使改善假腿步态的对称性。

Some expanding structures of tube to tube -sheet used in HP heater have been described in the article.

文章介绍了高压加热器几种管子管板胀接结构，对不同胀接手段进行了比较，分析其优缺点；对液压胀接的原理和计算公式以及管子管板液压胀接试验过程进行了表述。

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。