液压传动

She is not a little interested in hydraulics.

她对液压传动有浓厚的兴趣。

The finite element method is used to simulate transientflow of incompressible viscous fluid in a planar sudden expansionchannel.

0引言在液压传动和控制系统中，突然扩大的管道流动是一种常见的流动现象。

During the 1990s the company concentrated on building its electronics sector, acquiring a number of companies and disposing of the electrical insulator and hydraulic actuator businesses. In 1997, the company acquired Burnfield, of which Malvern was the most significant company.

20世纪90年代，本公司侧重于其在电子领域的发展，收购了一些公司，并剥离了电绝缘体和液压传动装置业务。1997年，公司收购了Burnfield公司中最为重要的Malvern公司。

Hydraulic transmission is widely used on the equipment of engineering mechanical,mining machinery and machining and so on.

1引言液压传动中，无论是什么样的设备，都普遍采用的是圆管连接构成系统。

Cleaning system uses a hydraulic transmission device, so that roll between the sweep and the sweep speed set with a more rational norms, efficiency doubled.

清扫系统采用液压传动装置，从而使滚扫与盘扫之间的转速配合更加合理规范，工作效率倍增。

Provided the choice result of the PLC and the PLC I/O elements, and has explained the design process of the PLC user program in detail, which includes the exposition to the design process of the public program, manual program of the stand-alone, autoloading program of the stand-alone, automatic/ autoloading program of whole machine, automatic return the origin program of whole machine, signal showing and trouble alarm program, and provide the trapezium drawing of all programs mentioned above .

在液压传动PLC控制系统的设计部分，给出PLC及其输入／输出元件的选择结果，详细地阐述了PLC用户程序的设计过程，其中包括对公用程序、单机单步程序、全机半自动程序、全机自动回原点程序的设计过程的阐述，并给出了上述程序梯形图。

Because we use hydraulic transmission, the system not only has good performance and flexibility of stepless speed regulation characteristics of the layout, but can a wide range of adjustment and control.

由于我们采用液压传动，使系统不仅具有良好的无级调速性能和灵活布局的特点，而且可以进行多种多样的调节和控制。

In order to improve the defects of the pneumatic transmissi on system u sed presently in mines,a kind of hydraulic transmission system based on fault t o lerant technology has been developed The working principle of the system is an a lysed in this article and the theoretical analysis in the fault tolerant techn ology is also mad

针对目前矿山使用的气动装载系统的缺点，提出了一种基于容错技术的液压传动方案，分析了该系统的工作原理，对该系统中应用的容错技术进行理论分

It mainly analyzes the blanking mechanism of die by the theory of plastic deformation and the principle of hydraulic pressure drive, and also analyzes its forming mechanism and theoretical basis of shaping of blanking die section.

利用塑性变形理论和液压传动原理重点分析了模具的冲裁机理，也分析了它的成形机理，还分析了形成冲裁件断面形状的理论依据，同时指出聚氨酯橡胶模具发展的方向。

The bench-scale equipment of numerical control simulates, the high-performance number electricity mold electricity bench-scale equipment, PLC programs laboratory bench, air operated PLC controls laboratory bench, the microcomputer control central air conditioning laboratory bench, the sensor engineering laboratory equipment; Automobile teaching equipment: PASSAT entire vehicle model, program control showing board, military cross-country vehicle teaching aid series, automobile driving analogous system; multimedia electricity-teaching room, multimedia language sound chamber, entire digital language sound chamber, language study system, teaching VCD series; machinery exhibition cabinet series, hydraulic transmission demonstration, electrical machinery electricity laboratory, project charting laboratory; the electrical machinery controls the laboratory bench, the electron bench-scale equipment, the electrician bench-scale equipment, counts the electricity, the mold electricity laboratory, the micro electricity connection laboratory, the electric power drives laboratory, the microcomputer test installation; central air-conditioning test installation, refrigeration system hot test installation, electrical appliances synthesis test installation; teaching wall map series, teaching blackboard series; The finance and accounting simulates laboratory, simulates the bank laboratory; medicine teaching model; transparent elevator laboratory bench, transparent electrical machinery model, transparent lathe engine bed; universities specialized laboratory bench, physics bench-scale equipment, chemical laboratory equipment, biology bench-scale equipment, middle school necessary instrument.....

数控模拟实验室设备，高性能数电模电实验室设备，PLC编程实验台、气动PLC控制实验台，微机控制中央空调实验台，传感器技术实验室设备；汽车教学设备：帕萨特整车模型、程控示教板，军用越野汽车教具系列，汽车驾驶模拟系统；多媒体电教室，多媒体语音室，全数字语音室，语言学习系统，教学VCD系列；机械陈列柜系列，液压传动演示台，电机电气实验室，工程制图实验室；电机控制实验台，电子实验室设备，电工实验室设备，数电、模电实验室，微电接口实验室，电力拖动实验室，微机实验设备；中央空调实验设备，制冷制热实验设备，家电综合实验设备；教学挂图系列，教学黑板系列；财会模拟实验室，模拟银行实验室；医学教学模型；透明电梯实验台，透明电机模型，透明车床机床；高校专业实验台，物理实验室设备，化学实验室设备，生物实验室设备，中学配套仪器。。。。。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。