查询词典 hydraulic drive

The development tendency of mechanical, electrical and hydraulic technology is integrated in this dissertation. To meet the demands of fast speed, reliability and stability, a kind of forging hydraulic press system with either high proportion of performance-price or good reliability and maintainability is developed.

本文从锻造液压机的快速性、平稳性与可靠性要求出发，结合机、电、液技术的最新发展趋势，研制了一种既具有高性能价格比，又具有高可靠性和可维护性的锻造液压机系统，并对其进行了理论与实践研究。

Have a four-post drop-down 5000 tons of precision hydraulic machine, hydraulic press 4000 tons of precision of the two.

拥有四柱下拉式5000吨精密油压机、4000吨精密油压机各两台。

Production facilities are large-tonnage hydraulic four-post frame machine and hydraulic press and a variety of punching machine, mold set up shop and has a computer engraving machine.

生产设备分别有大吨位四柱油压机及框架式油压机和各种冲压机，自设模具车间及拥有电脑雕刻机。

October 2006, the company developed its own production of fully automatic double-precision four-post, unilateral hydraulic cutting machine, precision four-post Hydraulic Cutting Machine, through the provincial-level scientific and technological achievements to identify new products, product technical performance indicators Tatsu similar products leading level, was classified as a national patent product and provincial "Spark Plan" products, can replace imports.

2006年10月，公司自行研制开发生产的精密四柱全自动双、单边液压裁断机，精密四柱式液压裁断机通过省级新产品科技成果鉴定，产品技术性能指标达国际同类产品领先水平，被列为国家专利产品和省"星火"计划产品，可替代进口。

C one edge of production technology, production equipment - the company purchased a new vacuum consumable arc furnace 800kg and 1500kg are the latest German technology, from Shenyang really Xin Technology Co., Ltd. in its continuous improvement of production technology and applies its the newest and most advanced programs from manufacturers; newly purchased 2500 tons of the three beam four-post Hydraulic Press Hydraulic Press Start by Shenyang Equipment Manufacturing Co., Ltd. design and manufacture; other ancillary lathe, welding machine, cutting machine, etc. acquired new.

生产设备——公司一期新购真空自耗电弧炉800kg和1500kg均采用德国最新技术设计，由沈阳真鑫科技有限公司在其不断改进生产技术的情况下采用其最新最先进的方案制造而成；新购的2500吨三梁四柱液压机由沈阳实达液压机设备制造有限公司设计制造；其它配套的车床、氩弧焊机、切割机等均全新购置的。

Based on the Saint-venant equations describing the channel flow movement, the nonlinear algebraic equations derived by the use of Preissmann weighted implicit four-point scheme are solved with the Netwon-Raphson method. A combined Gauss main-element elimination method with compress-storage technique is proposed. The relaxation iterative method for solving branch river networks is extended, which can turn the problem of any complex river networks into the problem of a series of single rivers. The coupling of hydraulic model with water quality model is built up. The combined model was applied to a large complicated river networks with numerical hydraulic structure which influenced by strong tide, storm and heave rain. Visualization of computational results is realized by means of MapInfo, which displays the computational results in fast, convenient and accurate way.

水力模型以描述河道洪水波运动的Saint-Venant方程组为基础，用Newton-Raphson方法直接求解按Preissmann加权四点格式进行离散所得的非线性代数方程组，提出了压缩存贮形式的Gauss列主元消去法并对数值解的收敛性进行了讨论；将支流流量的松弛迭代方法从树状河系推广到了环状河网，使任意复杂河网水力计算的问题都可化为一系列的单一河道的水力计算问题；建立了水力模型与水质模型的联接，初步应用于既有洪水、暴雨、强潮等综合影响，又存在多种水工建筑物及水力调度问题的大型复杂河网中的非恒定流水力、水质计算问题；利用MapInfo对计算结果的可视化进行了研究，有利于决策者快速、方便、准确地作出决策。

Grab dredgers: double rope grab dredgers, rope, four pairs of disc grab dredgers, disc, wireless remote grab, electric hydraulic grab dredgers, dredging, electric motors, excavator, grab dredgers bridge-type grab dredgers, wood, Grain leakproof grab、 lotus plant, special waterproof grab dredgers, Stainless steel grab 、Garbage power grab 、grab dredgers hand, pneumatic, salvage grab etc. the hydraulic system is global services

我公司生产的产品抓斗类有：单绳抓斗、双绳抓斗、四绳抓斗、双瓣抓斗、多瓣抓斗、无线遥控抓斗、电动液压抓斗、电动马达抓斗、疏浚抓斗、挖掘机抓斗、剪式抓斗、木材抓斗、煤抓斗、钢厂用废钢抓斗、粮食防漏抓斗、荷花抓斗、电厂专用防水抓斗、垃圾发电抓斗、手拉抓斗、气动抓斗、不銹鋼抓斗、蟹形多瓣液压抓斗、打捞抓斗、工程机械配套各种抓斗等。

Our company's main product includes:Four rope double petal multi-petal grab,Double rope double petal grab,Rolls the double petal multi-petal grab, Remote control grab, dredging grab, single rope grab, container, and hoist, Cable Remote-Control grab, Electric-Hydraulic grab, Electric Motor grab, hopper, spreader, jig, Deck Crane, Hydraulic Hose Crane.

抓斗：双绳抓斗，四绳抓斗，气动抓斗，单绳抓斗，液压抓斗，疏浚抓斗，挖掘机抓斗，剪式抓斗，木材抓斗，荷花抓斗、无线摇控抓斗、电厂专用防水抓斗、手拉抓斗、集装箱吊具、半自动吊具、吊梁，C型钩，集装箱运输车、夹钳、液压旋转可伸缩集装箱吊具、机械式抓斗、电动液压抓斗、无线电遥控抓斗、水下疏浚抓斗、工程车辆配套液压抓斗。

In the absence of any mention of cutting facilities, and dividing the work required in advance of hydraulic cylinder pressure is low, it pumps to large flow into the hydraulic cylinder, graduated cylinder moving fast.

因无任何节流设施，且分度液压缸前进时所需工作压力低，故泵以大流量送入液压缸，分度缸快速前进。

This paper analyze and study the influence of the superimposition in depth based on the previous achievements and combined with the theoretical qualitative analysis and project instances. The main contents as follow:Chapter 1: Indicate the significance and objective of this paper, review the previous achievements of the transient process and superimposition, and then present the study purpose of this paper.Chapter 2: combined with the physic knowledge of the fluctuation and the superimposition, Indicate the physical essences and the influence of the superimposition phenomena that exist in the diversion pipe system, and take one hydraulic turbine owning only one diversion tunnel and two hydraulic turbines sharing one tailrace conduit for instance to study out the numerical calculation superimpose operations.Chapter 3: From the calculation theory of the parameter of the guaranty calculation of regulation of the hydro-turbine, qualitative analyze the influence of the superimposition on them and the superpose time, combined with some project instances, get the numerical value of the influence of the superimposition and the superpose time.Chapter 4: Based on the previous achievements of the calculation and theoretical analysis of the surge-chamber ground swell, analyze the influence of the superimposition on it and the superpose time.

本文在前人研究成果的基础上，结合理论定性分析及工程实例，对波动叠加带来的影响进行深入分析研究，其主要内容如下：第1章，指出本文研究的意义和目的，回顾前人对水电站过渡过程及波动叠加方面的有关研究成果，在此基础上提出本文的研究内容；第2章，结合物理学中有关振动与波动叠加方面的有关知识，阐述水电站引水发电系统中存在的波动现象的实质及其影响，并以两机一洞和一机一洞具有上游调压室或下游调压室的水电站拟定其数值计算叠加工况；第3章，从机组调保参数的理论出发，定性的分析波动叠加对机组调保参数的不利影响及叠加时间，结合几个工程实例，得到波动叠加带来的影响大小及叠加时间；第4章，在前人对调压室涌浪进行计算和理论分析的基础上，分析波动叠加对调压室涌浪的影响及其叠加时间。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48