这个等式是其中一个最有用，因为它允许喷嘴出口速度计算。
This equation is one of the most useful, as it allows the nozzle exit velocity to be calculated.
通过数值计算，得到了喷嘴出口自由射流与冲击射流情况下的流体速度、压力等参数分布情况，及这两种流场中的激波位置。
Through the numerical simulation, the distribution of those parameters such as speed, pressure of the free jet and impinging jet flow is obtained, also the position of shocks.
对箱体设计进行外形及内部结构的改进后，箱体喷嘴出口的速度达到均匀。
Through improving the effects of the figuration and internal structure of box, the flow velocity of nozzle of water curtain system of box type is better even.
系统研究了喷嘴保护气流速度、喷嘴出口距零件表面距离、喷嘴移动速度和侧风速度对气体保护效果的影响。
The influence of gas velocity from nozzle, distance between parts and nozzle exit, moving velocity of nozzle and crosswind velocity were systematically investigated on shielding gas field.
研究表明，当喷嘴的圆柱段长度是喷嘴出口直径的2 5 ~ 3 0倍时，粒子的速度能达到水射流速度的95%。
The study showed that when length of circular column part is 2.5 ~ 3.0 times outlet diameter, abrasive particle velocity near to 95% velocity of water-jet.
同时，运用流体力学原理，对冷却管路系统进行了理论计算，得到了喷嘴出口处的水流速度以及作用于钢板表面的冲击压力。
The impact pressure on the surface of product and the flowing velocity were calculated by hydromechanics theory, and the calculatio.
同时，运用流体力学原理，对冷却管路系统进行了理论计算，得到了喷嘴出口处的水流速度以及作用于钢板表面的冲击压力。
The impact pressure on the surface of product and the flowing velocity were calculated by hydromechanics theory, and the calculatio.
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