It is very important to describe the performance curves of centrifugal compressor by mathematical model accurately for the automatization design and management of gas transmission trunk line.
对于输气干线的自动化设计和管理来说，用准确的数学模型描述离心压缩机的特性曲线至关重要。
Multiphase pump and multiphase pipeline have their own performance curves, respectively.
多相泵与混输管道有其各自的性能曲线。
Therefore, the change pump performance curves become the main form of energy-saving pumps.
因此，改变水泵性能曲线成为水泵节能的主要方式。
The difficulty of building up such model is how to get the precise off-design performance curves of components.
其难点之一在于如何获得准确的部件变工况性能曲线。
The performance curves are important for evaluation of a compressor performance and significant for research on trends and formation mechanism.
性能曲线是评价压气机性能的重要指标，对其变化趋势及形成机理的研究具有重要意义。
The general situation of domestic oil line pumps is presented, the hydraulic design formulas and performance curves of the multistage impeller pumps are given.
介绍了国内输油管线泵的概况，并提供了多级中开式输油泵的水力设计公式和性能曲线。
The numerical methods on engine. performance curves were analysed, then several kinds of mathematical models on engine performance curves were developed in this paper.
本文对内燃机性能特性曲线的数值方法进行了分析，提出了适合内燃机性能特性曲线处理的数学模型及其处理方法。
With a widely used method for actual superheat temperature correction, the inverter air-conditioner compressor model is built up on the basis of performance curves fitting.
在图形法拟合的基础上，借鉴成熟的对实际过热度进行修正的方法，建立了变频空调器压缩机模型。
The performance curves directly reflect the running status of reciprocating pump and its features; the traditional drawing method has the characteristics, a great deal of work and low efficiency.
性能曲线可直观地反映往复泵运行工况及其特性，传统的绘制方法工作量大，且效率低。
The performance curves directly reflect the running status of reciprocating pump and its features; the traditional drawing method has the characteristics, a great deal of work and low efficiency.
性能曲线可直观地反映往复泵运行工况及其特性，传统的绘制方法工作量大，且效率低。
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