Meanwhile the distinction of the effects of rock permeability on swirling jet and straight jet is studied.
同时，研究了岩石渗透率对旋转射流和普通圆射流影响的区别。
Dual-jet is a new kind of high efficient jet, which is formed by combining round straight jet with circular conical swirling jet.
双射流是由中心直射流和同轴的环形旋转射流形成的一种新型高效射流，用双射流能够克服门限压力与高破岩比能的制约而高效破岩。
Therefore, this research would provide a instructive reference straight for the structure design of thrust-vectoring motor and jet et vane.
研究的结论可以为推力矢量发动机及燃气舵的结构设计提供直接的参考。
Her hair is jet-blacked and straight.
她有一头乌黑的直发。
Her hair is jet-blacked and straight.
她有一头乌黑的直发。
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