jet velocity

The effect of several main parameters on the removal efficiency and surface quality is researched through experiments. Those parameters include intensity of magnetic field, off-set distance, jet velocity, diameter of polishing particles, and so on.

通过工艺实验总结出各主要工艺参数（磁场强度、抛光距离、射流速度、抛光粉粒径等）对去除效率和表面粗糙度的影响规律。

The factors considered were jet velocity, spacing of nozzle-to-impinging plate ( height), slot width, angle between jet direction and plate, temperatures of impinged plate and water ( liquid) from the slot nozzle.

考虑冲击区对流换热的因素有射流的速度、射流出口距冲击板的距离（高度）、喷嘴的宽度、射流出口速度方向与冲击板之间的夹角、冲击板的温度及水温等。

And the jet velocity is related to the train speed.

喷射流速度与列车速度有关系。