pump performance parameters

An empirical formula of diameter d4 of abrasive waterjet nozzle to pump pressure P and uniform outlet velocity V_4 was established based on the design of structure parameters and performance test.

本文对射流喷头进行了结构参数设计和性能实验，得出了动力泵压力P与磨料水射流出口处均匀速度V4和磨料喷嘴直径d4的经验公式。

The problem is studied firstly that the performance characteristics of pump be affected specifically by the four kinds of geometrical parameters of impeller, i. e. number of blade, outlet blade angle, tangential blade thickness and centre angle in this article using the orthogonal experimental method.

作者运用正交试验法，进行了叶片数，叶片出口安放角、圆周厚度和包角等四种叶轮几何参数对离心泵能量性能影响的试验研究。

Pump performance for the two main parameters of displacement and pressure.

泥浆泵性能的两个主要参数为排量和压力.

Moreover, in order to improve the EDWA performance, the parameters are optimized such as pump power and waveguide length.

并且为了全面发挥掺铒玻璃波导放大器的性能，需要抽运功率、波导长度等各个参量配合起来。

This paper proposed a mathematics model for the simulation of ground-source heat pump system based on distributed parameters, including compressor, plate-type heat exchanger, thermostatic expansion valve, water and refrigerating agent thermal condition performance and performance of state matter, and so on.

本文用稳态分布参数法建立了土壤源热泵装置各部件的数学模型，包括压缩机、板式换热器、热力膨胀阀、水和制冷剂的热性和物性参数的程序化等。