The most probable cause of the erosion is the too high speed of the fluid with the entrained metal particles.
最可能的原因就是过高的流体速度，而且流体中还夹带有金属颗粒。
The NPSHr in table is valid only far fluid without entrained air.
表中的NPSHr只适用于不含气体的介质。
According to the injection principle, because of the entrainment of high-speed fluid, the waste gas and the rock powder returning to the circular spacing between the drill bit and the hole wall is entrained from the re-absorption spacing to the drill bit accepting cavity, and is mixed with the high-speed air flow from the spline housing injection spray nozzle in the drill bit mixing spray nozzle, to form the mixed jet fluid.
根据引射原理，由于高速流体的卷吸作用，将钻头与孔壁间环状间隙上返的废气和岩粉从重吸收间隙处卷吸到钻头接受腔内，并和来自花键套引射喷嘴的高速气流于钻头混合喷嘴内混合，形成混合喷射流体。
It has shown from the experimental results that the vorticity near the jet boundary region is high in magnitude due to the interaction between the jet fluid and the entrained ambient fluid.
结果表明，由于射流的卷吸及其与环境流体之间的相互作用，使得射流边界处具有很高的涡量；
This will lend themselves to better understanding the underlying physical mechanisms of fluid loading on plates and shells. (5) The coupling effects on two concentric cylindrical shells with periodic annular plates as well as entrained fluid are investigated theoretically.
有助于更好地理解板壳声辐射问题潜在的物理机理。（5）理论研究两个同心圆柱壳体间通过周期环板和附连流体的耦合效应。