此外，笔者提出了若干新的概念和考虑了针阀和压力室形状对射流雾化的影响。

In addition, we suggest some new concepts and consider the effect of the shape of pin valve and pressure chamber on the atomization of a jet.

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介绍一种分析、预测射流管阀性能参数的方法。

This paper introduces a method to analyze and predict the performance parameters of jet pipe valves.

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因此，为了改善由射流前置级驱动的伺服阀的性能，研究伺服阀前置级射流流场的数学模型及分布规律是至关重要的。

Therefore, in order to improve the performance of hydraulic servo valve, it is important to study the mathematical model and distribution of jet flow field.

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