Atmospheric pressure then pushes the piston back down the cylinder, and if anything (such as a pump) is attached to the piston, some useful work can be done.
于是，气压就会再次将活塞推至汽缸底部。而假如有诸如水泵这样的物体与活塞连接，就可以在活塞的带动下完成一些工作。
At present, digital variable displacement axial piston pump has some problems.
目前，数字变量轴向柱塞泵还存在着很多问题。
A reciprocating piston, the inhalation and from a liquid, known as a working cycle; this pump known as the single-action pump.
活塞往复一次，各吸入和排出一次液体，称为一个工作循环；这种泵称为单动泵。
The formulae in this paper are founded for axial piston pump whose rotor's structure is straight axis and auto-location type, but other type of pump can reference it.
文中算式以直轴自位式缸体结构的轴向柱塞泵为基本计算模型，但对于其他类型的轴向柱塞泵亦有很大参考应用价值。
Reciprocating piston pump crankshaft by connecting rods connected with the original motivation. Prime mover can be motor, steam engine can also be used.
往复泵的活塞由连杆曲轴与原动机相连。原动机可用电机，亦可用蒸汽机。
This article designed a displacement setting mechanism by the fixed quantity of valve model radial column piston as base pump.
以阀式径向柱塞定量泵为基泵设计了控制进油阻力的变量机构。
Decreasing the piston diameter of the pump can improve the stability.
减小油泵柱塞直径对稳定性有好处；
Working principle: piston moves from left to right, form a negative pressure pump cylinder, the liquid tank into the pump by the inhalation valve cylinder.
工作原理：活塞自左向右移动时，泵缸内形成负压，则贮槽内液体经吸入阀进入泵缸内。
Close the door distribution discharge valve and, if cut-off valve is opened, pumping water to the piston from the pipeline until the pump output.
关闭分配阀卸料门，如有截止阀则打开，泵送清水至活塞从输送管输出端泵出为止。
However, someone thinks that the optimum oil recovery mode of Lunnan oilfield should be hydraulic piston pump.
但有人对此提出了不同意见，认为该地区的机械采油应首选水力活塞泵。
To the problem of cavitation and shock that appears in the outside circulation piston pump running, the relation-ship between rotor profile and dead volume, flow rate and cavitation were analyzed.
针对外环流活塞泵运转时出现的汽蚀、震动问题，从理论上分析了转子型线与闭死容积、流速变化和发生汽蚀的内在关系；
Reciprocating pumps convert rotary motion to linear motion. Pump speed in RPM determines the pumps output volume for any given combination of cylinder bore and piston stroke.
循环泵将曲轴旋转运动转化为柱塞的直线运动。泵速转每分钟决定了任何气缸和活塞组合的排泵量。
Continuously reciprocating piston movement, the pump suction and the pressurized water process is continuous alternately.
活塞不断往复运动，泵的吸水与压水过程就连续不断地交替进行。
The radial piston pump can adopt manual-control or electro-hydraulic proportional control to realize the control of constant flow, constant pressure, constant power and load sensitivity etc.
径向柱塞变量泵可以采用手动控制、电液比例控制或负载敏感控制等多种控制方式，实现恒流量、恒压力、恒功率的控制。
Variable volume piston pump. Swash plate design allows for high efficiency and low noise.
该产品为可变容量柱塞泵。斜板的设计，高效率，低噪音。
A. Hydraulic pressure ADAPTS constant power variable axial piston pump for energy saving.
液压泵采用恒功率自动变量轴向柱塞泵，以节省能源。
The conclusions are helpful to the noise control of piston pump.
研究结果有助于柱塞泵的振动噪声控制。
For the avoidance of rigidity impact of commutative piston mortar pump in movement, the amendatory CAM mechanism was designed, and the characteristic of movements was analyzed.
为避免互逆活塞式砂浆泵在运动过程中出现的“刚性冲击”，对凸轮机构进行了修正设计，并分析了修正凸轮机构的运动特性。
A water mist fire suppression system driven by water hydraulic piston pump is developed and the water hydraulic parts are successfully applied in fire-fighting field.
设计了由纯水液压柱塞泵驱动的固定式高压单相流细水雾灭火系统样机，将纯水液压元件成功应用到消防领域。
Simulation results show that the dynamic characteristic of electro-hydraulic servo controlling radial piston pump using this self-adapting fuzzy PID controller is very good.
仿真结果表明，基于自适应模糊pid控制器的电液伺服控制径向柱塞变量泵具有良好的动态性能。
The content of paper includes two parts: the noise analysis of hydraulic axial piston pump and improved design of structure.
设计主要有两个部分的内容：液压轴向柱塞泵的噪声分析和结构的改进。
Reciprocating pump flow and pressure head has nothing to do with the pump cylinder size, and the reciprocating frequency of the piston stroke.
往复泵的流量与压头无关，与泵缸尺寸、活塞冲程及往复次数有关。
Medium horsepower, open loop, axial piston pump for high performance applications.
中等马力，开环，高性能轴向活塞泵。
Structural design and operational principle of molds for plastics piston pump housings are presented. The mold presents itself as a simple and rational piece of design work.
介绍了柱塞式液压泵塑料壳体注塑成型模具的结构设计和工作原理，该模具具有简单合理、动作可靠等特点。
This paper analyzes the cause of poor noise-reduction effect of high pressure axial piston pump, and puts forward design criterion and attention points of improving noise-reduction effect.
本文分析了高压轴向柱塞泵降噪效果欠佳的原因，提出了提高降噪效果的设计准则和应注意的问题。
With the piston pump, diaphragm and gear pumps is different is that single-screw pump can be used for pharmaceutical filling and measurement.
与柱塞泵、单螺杆泵及齿轮泵不同的是，单螺杆泵可用于药剂填充和计量。
Now to an example to illustrate the reciprocating piston pump works.
现以活塞式为例来说明往复泵工作原理。
The principle of hydrostatic pressure bearing is introduced in the paper, the sliding boot of radial piston pump is designed by using principle of hydrostatic pressure bearing.
本文介绍了静压支承原理，并利用静压支承原理对新型径向柱塞泵的滑靴进行了设计。
High horsepower, open loop, axial piston pump for high performance applications.
高马力，开环，高性能轴向活塞泵。
High horsepower, open loop, axial piston pump for high performance applications.
高马力，开环，高性能轴向活塞泵。
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