柱

A new type proportional servo pump is made by a fixed displacement piston pump and a variable displacement piston pump.

用新型的电液控制技术，对一台定排量轴向柱塞泵和一台同排量比例变量柱塞泵进行有机组态，构成倍增排量比例伺服泵，经实际使用效果良好。

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。

Axial piston pump Body Pump is ZB40 one of the key components.

轴向柱塞泵泵体是ZB40柱塞泵的关键零件之一。

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。

Lower part of stem to be of bulbous bow, upper part to be of raked type and consists of girder and plate.

首柱下部为球鼻首，上部为倾斜首柱，由桁材和板组成。

The key to preve n tion and reduction of the drill string failure lies in prevention.For this reaso n,in view of the different stressed characteristics of the different sections of the drill string in borehole,the research is conducted by dividing the drill st ring into four failure sections,namely,the section at the wellhead and the secti ons at the upper part,vicinity and lower part of the zero stress point,to inves tigate the essence and basic reason of the failure,and to put forward scientific and feasible preventing measures,thus,being advantageous to complete and system atic prevention and forecast of the drill string failure.

防止和减少钻具失效，关键在预防，为此，根据钻柱各部分在井内的受力特点不同将其划分为钻柱井口处、零应力点上部、零应力点附近、零应力点下部四个钻具失效段进行研究，查出其失效的实质及根本原因，提出科学可行的防范措施，有利于全面系统地预防预测钻具失效。

The adsorption effect was then verified by cation-exchange chromatography using 1-ml Streamline SP prepacked column and 28-ml Streamline SP self-assembly column.

用l mlSP预装柱及自装28 ml Streamline SP柱进行离子交换层析以验证吸附效果。

The clearance variation that is caused by the heat deformation of the cylinder and the plunger piston is analyzed.

在小型、高压、无油领域，对高压级柱塞的结构形式、材料及气缸和柱塞间的配合间隙等问题进行了分析研究。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。