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.

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。

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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.

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。

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In jet oil hydraulic spool valves, the oil flows through a rush path because of the shape changing of the valve.

流体在通过直喷式柱型液压控制阀阀芯时，阀内形状的变化使流体的运动量发生变化。

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