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The main product comprises silp-valve vacuum pumps, root vacuum waterring vacuum pumps, series roary vance vacuum pumps and various kinds of vacuum pumps system,Our products are widely used in areas,covering metallurgy, chemical industry,medical and pharmaceutical appliction, light and textile industry, electrical industry, defence scientifice researches etc,.

我厂主要产品有：滑阀真空泵、罗茨真空泵、往复真空泵、水环真空泵、旋涡泵各类真空机组、及真空应用设备，与供氧设备，其也通用设备制造、加工、修理。真空浸渍我厂产品广泛应用于冶金、化工、医药、经纺、电子、国防、科研等部门。特别H-8B型泵，在原有基础上经过改进，获得了更高的真空度和使用寿命。

In 8 patients with main portal vein tumor thrombus, 2 died, 4 recured in 6 months.

术后分别采用化疗泵和微量泵化疗，并观察疗效。

Beijing Huade Group hydraulic constant power variable plunger pump to fill the domestic blank large displacement piston pumps for metallurgy, forging, mining equipment and other large facilities.

北京华德液压集团公司的恒功率变量柱塞泵，填补了国内大排量柱塞泵的空白，适用于冶金、锻压、矿山等大型成套设备的配套。

Piston pump first make clear the historical development of the Classification and again that the principle of the piston pump.

首先搞清楚柱塞泵的分类及其发展历史再说明了柱塞泵的工作原理。

Then, experimental study on the noise performance of the hydraulic piston pump under different conditions has been accomplished.

针对一种新型的阀配流式水压轴向柱塞泵的结构特点，分析其噪声产生的机理，在不同条件下对水压泵进行噪声特性的试验研究，并在此基础上提出有效的降噪措施。

Experiment with vibrating of axial piston pump, find the main characters of vibration.

对柱塞泵振动进行试验，得出该泵的振动基本特性。

First based on the basic principles of hydraulic pumps, the axial piston pump is introduced combining with their own characteristics.

首先从液压泵的基本原理着手，结合轴向柱塞泵自身的特点进行介绍。

The attainable pressure of the pump piston compressor is always considerably higher than the maximum pump pressure.

泵的内置活塞压缩机可达到的压力总是高出泵的最高压力许多。

This paper focused on the noise analysis of hydraulic axial piston pump and the contrast experiment before and after the improved design.

本次设计的主要内容有两个部分：液压轴向柱塞泵的噪声分析和结构的改进，着重于对液压轴向柱塞泵的噪声在改进前后的对比分析。

Internationally 70,80 on the shaft during the development of radial piston pump with flow valve to overcome the radial piston pump with flow deficiencies.

国际上70、80年代发展的轴配流径向柱塞泵克服了阀配流径向柱塞泵的不足。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。