旋启式止回阀压降最小，能够完全自动关闭，即在介质流动停止、重力和介质倒流的状态下自动关闭阀门。
Swing-type check off er the least pressure drop and offer simple automatic closure; when fluid flow stops gravity and flow reversal closes valve.
采用测压方法研究了矢量喷流对细长旋成体大迎角非对称流动的影响特性。
This paper studies the effect of vectoring jet on the transverse aerodynamic characteristics of a slender body.
分析表明：强力旋压毛坯件的变形流动主要是轴向变形，影响成形质量的因素主要是成形过程中的径向变形和切向变形。
The results indicate that the deformation flow of power spinning is mainly axial deformation, the radial deformation and circumferential deformation have an impact on the forming quality.
通过模拟，获得了滚珠旋压稳态下的金属的流动规律，与试验结果相吻合。
Through simulation, the flow rules of metal are obtained during the steady deformation of ball spinning, it coincides with results of experiment.
通过模拟，获得了滚珠旋压稳态下的金属的流动规律，与试验结果相吻合。
Through simulation, the flow rules of metal are obtained during the steady deformation of ball spinning, it coincides with results of experiment.
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