根据介质的磨损性选择泵转速。
在第二级中，运用径向基网络估计血泵转速连续变化对流量的影响。
In the second order, radial basis function neural network was applied to estimate the flow rate of the pump at different rotational speed of the blood pump.
论述了离心泵转速提高对流量、扬程、功率、汽蚀余量等参数的影响。
The paper discusses the effect of rotation rate on property parameters such as flow volume, delivery lift, power and cavitation etc.
由举升流体所需功率和螺杆泵转速预测电动机轴的负载功率，确定地面电机额定功率。
And the horsepower of surface motor is ascertained through anticipating the operating power of motor shaft according to the power of lifting liquid and rotational speed of PCP.
首先应根据油品的粘度选择适当的泵转速，以保证泵npshr能满足用户的实际吸入条件。
The first select the appropriate pump speed should be based on the viscosity of the oil, to ensure the pump NPSHr can satisfy the user's actual suction conditions.
由于变频器的使用，使泵转速下降，出口压力降低，减少了机械磨损，降低了维修工作量，延长了设备的使用寿命。
Because of the use of frequency converter, so that pump speed decreased, exports to reduce stress, a reduction of mechanical wear, reducing maintenance workload, extended equipment life.
交流变频调马达，数码式泵转速(rpm)显示功能，便于精确控制马转速，易于设定和保持与生产线速同步转速！
Variable AC drive with independent digital R. P. M. readout for pumps offers precise control of AC motor speed, easily to set and maintain application speed tailored to line speed.
在工艺条件允许的情况下，改变泵的流量、扬程、转速及介质的操作温度等操作参数，可以避免汽蚀的发生。
In the process conditions permit, the change in pump flow, head, speed and medium operating temperature operating parameters, to avoid the occurrence of cavitation.
这种泵的叶轮叶片可以自动调节来适应转速、流体粘度和不同压力。
This pump impeller blades can be adjusted automatically to adapt to speed, fluid viscosity and pressure.
由于转速过高，使高粘度泵在运转时内部转子几乎只是形成了空转，围绕所输送介质打滑，造成吸不上料，或者是流量很小。
Due to high speed, high viscosity pump inside the rotor is barely formed when running idle, surrounding medium by sliding, cause not feeding, or flow rate is small.
合理确定齿轮泵的工作转速，使齿轮与轴的转动避开啮合共振频率，可以防止噪声加剧。
Rationally define the work gear pump speed, gear and the axis of rotation to avoid engaging resonance frequency, can prevent noise intensified.
在这种状况下，必须降低泵的转速，加大电机的功率，加大进出口的管径来减少介质的流动阻力。
Under this situation, we must reduce the speed of pump, increase the power of the motor, increase the import and export of pipe diameter to reduce the flow resistance of the medium.
石油化工设备常常是24小时连续运转，这时泵的工作压力应该取得比额定压力低得多，且工作转速也应该低于额定转速。
Petrochemical equipment is often 24-hour continuous operation, when the work pressure pump should be made much lower than the rated pressure, and speed work should also be lower than the rated speed.
转速降低以后，泵的流量会反而增加，而且泵的噪音会降低，但肯定打不到理论流量。
Speed is reduced, the pump flow rate will increase instead, and the noise of the pump will be lower, but certainly can't flow theory.
经理论分析计算，确定变速泵理想的转速，确定调节阀理想的开度，调节过程一次完成。
Calculation by theoretical analysis may ascertain the ideal rotate speed of variable-speed pump and ideal opening of regulating valve, completes adjust process at one time.
给出了采用变转速泵控闭式回路控制差动缸的原理，建立了该系统的数学模型，进行了计算机数字仿真研究。
In this paper, the principle of variable speed pump control hydraulic differential cylinder is designed, and the simulation model of system is built, and the simulation research is carried out.
高性能550sx的销售开始。一个混流泵，自动转速限制器和自我盘旋模式，对比赛现场的即时赢家。
Sales of the high-performing 550sx started. A mixed-flow pump, automatic rev limiter and self-circling mode made it an instant winner on the competition scene.
因此，针对超低比转速泵的具体情况，进行了提高汽蚀性能的试验研究。
After thoroughly analysing the details of the ultra low specific speed pump, a series of experiment studies are carried out.
基于二元理论，用FORTRAN语言编程实现了高比转速混流泵叶轮的水力设计。
Based on the two-dimension theory, a computer code is made in FORTRAN language to design the high specific speed mixed-flow pump.
同时利用变频调速自动控制粗苯冷却泵的转速，实现粗苯温度的稳定。
And using the frequency variable adjusting speed technique to control the speed of benzole cooling pump automatically, to achieve the temperature stability of the benzole.
涡轮在高温、高转速下工作，泵在低温或常温、高压、高转速下工作。
The turbine will operate at high temperature and high rotational speed, its pump will work under the conditions of lower or normal temperature, high pressure and high rotational speed.
先进的技术，包括自动转速控制，以防止过度转速时泵出来的水。
Advanced technology included automatic RPM control to prevent over-revving when the pump was out of the water.
变速调节我们已经知道，轴流泵是在一定转速下工作的，而且获得相应的流量、扬程、功率和效率等。
Variable-speed control we already know, at a certain speed axial flow pump are working under, and to obtain the corresponding flow, lift, power and efficiency.
因为介质粘度的高低直接影响到选择高粘度泵的转速。
Because the medium viscosity directly affects the choice of high viscosity pump speed.
输送高粘度介质时，泵应选低转速，若粘度较低，相应可选择高转速。
Transport high viscosity medium, low speed pump to be elected, if the low viscosity, the corresponding high-speed selectable.
同时，发动机转速的恒定也使液压泵输出排量稳定，进而保证了行走速度和振动频率的稳定，提高了压实质量。
At the same time, constant engine speed stabilizes output displacement of hydraulic pump and then stabilizes travel speed and vibratory frequency in turn, so that compaction quality is increased.
因此，新型转子泵可以采用较普通转子泵更高的工作转速、更多的齿数，并获得更大的流量、更小的波动和更小的磨损。
So, this new type of cycloidal pump is capable of operating with higher rotation speed and more teeth, higher specific flow rate, less flow fluctuation and wear.
因此，新型转子泵可以采用较普通转子泵更高的工作转速、更多的齿数，并获得更大的流量、更小的波动和更小的磨损。
So, this new type of cycloidal pump is capable of operating with higher rotation speed and more teeth, higher specific flow rate, less flow fluctuation and wear.
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