液压

To meet the need for courseware of CAI in teaching hydraulic systems, in this paper, we talk about the method of making FLASH movies to illustrate the principles of hydraulics.

利用Flash 软件的特色，针对液压传动CAI教学课件的需求，制作了准确、生动的Flash动画，直观地展示了液压元件和系统的原理和工作特性。

To meet the need for courseware of CAI in teachinghydraulic systems, in this paper, we talk about the method ofmaking FLASH movies to illustrate the principles of hydraulics.

利用Flash软件的特色，针对液压传动CAI教学课件的需求，制作了准确、生动的Flash动画，直观地展示了液压元件和系统的原理和工作特性。

Based on the compressibility, viscosity resistance and the working house system's deformation etc, flow equations of distribution spool, hydraulic tube and fluid cylinder for 300 MN die forging hydraulic press were established, and dynamics equations of moving beam and upper beam were established based on analysis. The dynamics mechanical-hydraulic coupling model of driving system was established.

考虑流体的可压缩性、粘性阻力及工作框架系统变形等因素，采用解析法建立300 MN模锻水压机动梁驱动系统分配阀口、液压管道、液压缸的流量方程以及动梁和上横梁的动力学方程，得到驱动系统的动态机液耦合模型。

Based on the compressibility, viscosity resistance and the working house system's deformation etc, flow equations of distribution spool, hydraulic tube and fluid cylinder for 300 MN die forging hydraulic press were established, and dynamics equations of moving beam and upper beam were established based on analysis. The dynamics mechanical-hydraulic coupling model of driving system was established.

摘 要：考虑流体的可压缩性、粘性阻力及工作框架系统变形等因素，采用解析法建立300 MN模锻水压机动梁驱动系统分配阀口、液压管道、液压缸的流量方程以及动梁和上横梁的动力学方程，得到驱动系统的动态机液耦合模型。

By analysing the scar of Four Ball Friction Test and XPS photoelectron spectrum. The mechanism of ZnDDP additive effect on friction performance was disclosed.(5) The principle of CVT hydraulic control is studied.

研究了CVT的液压系统控制原理，研制了CVT的实验变速箱、CVT变速控制的液压泵站和基于PC机的电控系统，搭建了CVT传动性能实验台，为CVT传动的基础性研究奠定了基础。

The Laiwu Steel Group Special Steel County 50 tons electric furnace electrode regulator is the analogous circuit plug-in unit type product at the beginning of 80 ages last century .because the primary device gets older and the damage is serious, which creates the system failure rate to be high and the smelting electricity consumes high.

因此，根据技术进步要求对其进行数字化改造。通过对电炉的炼钢工艺进行分析发现必须有电极的阻抗控制和保护电极和保护炉墙等功能，通过对电气系统的分析可以得到必须有短路、过电流和保护开关的功能，通过对液压机械性能进行了分析和测试发现液压阀存在死区需要进行补偿。

Because of the connecting rod is one of dyadic engine of piston and main compression engine part, whose larger end hole and crank shaft link up , the small head hole links up by the wrist pin and the piston , whose effect is that the piston gas pressure is transmitted to the crank shaft , collect crank shaft gas in driving but setting a piston in motion to compress a cylinder.

本文主要论述了液压设计。因为液压是活塞式发动机和压缩机的主要零件之一，其大头孔与曲轴连接，小头孔通过活塞销与活塞连接，其作用是将活塞的气体压力传送给曲轴，又收曲轴驱动而带动活塞压缩汽缸中的气体。

Based on the property and performance requirement of hydraulic simulator, the identification results of nominal models and their uncertainty bounds of single channel systems in inner and outer gimbals as well as the flexible and systematic robust controller design frame provided byμ-synthesis, the robust feedback controllers withμ-synthesis are designed for single channel systems in hydraulic simulator's inner and outer gimbals.

根据液压仿真转台的特性和性能要求，结合内、外框单通道系统名义模型及不确定性界的辨识结果，利用H∞控制理论中的μ综合法能够提供灵活的和系统化的鲁棒控制器设计构架的特点，对液压仿真转台内、外框单通道系统进行了μ综合法鲁棒反馈控制设计。

Our company specializes in the production and sales of various grab,loading and unloading hopper,container spreaders,metallurgy,hanging fixture,hydraulic hoses,marine for hanging,ports,mechanical engineering grab crane with a bucket,and dig and port accessories,grab and port of maintenance and management of the above products also second-hand intermediary trade business,etc.

我公司专业生产和销售：各种抓斗，装卸起重机安全技术，集装箱吊具，冶金夹具，克令吊，船用液压浮吊，船用液压软管吊，港口门机，工程机械配抓斗和挖斗以及铲斗，港机配件，抓斗和港机的维修，另外还经营以上起重机安全技术的二手中介买卖业务等。

From 2002 to start on several well-known domestic manufacturer of hydraulic hammers matching supply hydraulic hammer drill rod, solder-Block, sets, flat sales, and other fragile items.

从2002年就开始向国内几家知名液压锤生产厂家配套供应液压锤钎杆、钎杆座、套、扁销等易损件。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。