压力泵

The load through the mouth feedback to change the variable distribution of the oil pump plate angle in order to change the pump displacement.

采用恒功率变量泵控制方式，通过负载反馈使泵的压力、流量自动调节到最佳大小，使控制性能和节能效果大为提高。

But the working condition of the screw pump is so rigorous that the ordinary rubber could not fulfill the requirement of the terrible working condition such as high temperature,high pressure,long working hours,corrodent,seasonal stress and so on.

但采油螺杆泵工作条件十分苛刻，如高温、高压、工作时间长、磨蚀性介质、周期性挤压力等等，传统的定子橡胶已临近其性能极限。本文主要讨论纳米CaCO3和PVC树脂对丁腈橡胶的改性效果，综合提高丁腈橡胶的强度、耐油、耐磨等性能，通过改性使得丁腈橡胶能够满足采油螺杆泵定子材料的性能要求。

In the reciprocating pump, the suction valve and exhaust valve is a very important component and is vulnerable parts of their work a direct impact on the limit pressure reciprocating pump, extraction rate, power consumption, as well as the reliability of operation.

在往复泵中，吸气阀和排气阀是非常重要的部件且是易损部件，它们工作的好坏直接影响往复泵的极限压力、抽气速率、功率消耗以及运行的可靠性。

And simulating models of the liquid instantaneous pressure in the pump barrel and the pump dynamometer were established.

从而建立了泵筒内液体瞬时压力与泵示功图的仿真模型。

The signal test table is established where the Labview signal collection system collects the concrete exit pressure signals, the piston displacement signals of concrete cylinder and the main hydraulic signals. The real measured signals are processed through arithmetic equilibrant filter of the data signal processing method. The pumping efficiency and relative error of real time output are measured by two output calculation methods.

搭建了实测信号试验台，通过Labview信号采集系统现场采集混凝土出口压力信号、混凝土缸活塞位移信号和主液油信号，采用算术平均滤波法的数字信号处理方法对实测信号进行处理，通过两种排量计算方案检测泵车实时排量的泵送效率和相对误差。

Pressure gauges, hand grease gun, pressure lubricating pump, tyre pump, luggage carrier , equipment for galvanisation.

压力表，手动抢装置，压力润滑泵，轮胎泵，行李运送装置设备

Department instructions manometer pressure water pump, water pump is not

压力表指示泵出水处有压力，泵仍不出水

These self-priming pumps accommodate flow rates from 0.1 microliter to 350 gpm and are extremely durable, withstanding pressures up to 232 psi. There are no internal universal joints, valves, dead corners or glands to impede flow and these pumps are reversible for back flushing lines.

这些可自我启动的泵可用流是从0.1microliter到350gpm，非常持久耐用，可承受的压力可高达232psi，没有内在的万向街头，阀、死角和流通控制管，这些泵还可以逆转。

The new model is a first-order ordinary differential equation group for the fluid pressure in the cylinder...

该方程是关于液缸内液体压力、泵阀升程与泵阀运动速度的一阶常微分方程组。

The spike pressure increases with the unloader setting until it becomes so great that damage begins to occur in the system broken hoses, blown valve caps, leaking unloaders and so on.

当减呵器将水引至旁路时，就会减荷器的压力就会高于其设定压力，如果压力太大，就会损坏泵；软管爆裂，阀盖炸开，减压器泄露等。

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。