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1·Valve adjusting will bring transient flow to the system.

阀调节会引起系统发生瞬变。

2·This paper studies the transient flow rule of single phase gas after the well is opened.

本文对开井后单相气体瞬变流动的规律进行研究。

3·Based on impulse response, the solving method of transient flow in frequency domain is described.

基于脉冲响应，描述瞬变流在频域中求解的方法。

4·Developed wellbore transient flow model and friction calculating method for the sand mixed fluids effected by propant.

建立了井筒不稳定流动模型，提出了支撑剂影响下的混砂液摩阻计算方法。

5·Establish the transient flow model of the horizontal well for the uniform flux and infinite conductivity wellbore type.

建立了水平井筒为均布渗流型和无限导流型的不稳定渗流模型。

6·The transient flow through a pipe orifice starting from an initial steady flow has been studied via numerical analysis.

该文对初始稳定流开始的液流通过节流孔的过渡过程进行了数值解析计算。

7·Special attention is devoted to the analysis of the mechanism of pump under gas-liquid two phase transient flow conditions.

特别注意了泵在气-液两相流瞬变工况的机理分析。

8·It constructs a mathematic model to describe gas transient flow according to the mass, momentum and energy conservation law.

根据气体瞬变流动过程中所遵循的质量、动量和能量守恒定律建立描述气体瞬变流动的数学模型。

9·This paper presents some advances in the study of centrifugal pump performance under pure liquid phase transient flow conditions.

本文介绍了离心泵在纯液相流瞬变工况的性能研究的一些进展。

10·The mathematic model of the transient flow was set up to study the unsteady flow phenomena in the high-pressure common-rail injector.

针对高压共轨喷油器内部非稳态流动现象，建立起瞬态流动的物理数学模型，采用模块化分析方法进行了瞬态数值模拟。