Using the perturbation method we have got the fourth order of approximation of the velocity potential to the problem.
运用摄动方法，给出了速度势的四阶近似，然后得到了圆柱表面的无量纲的压力系数和阻力系数。
The dynamical behaviors of subsystem in coupling chemical reaction system with time delay as well as velocity perturbation were studied by numerical simulation.
在耦合自催化反应系统中，采用数值分析方法研究了考虑时滞效应和流速扰动时子系统的动力学行为。
Two sets of inverse formula of velocity perturbation and reflection functions are deduced under the hypothesis of small energy absorption.
在能量吸收比较小的假设下，利用此法可得到两套及演速度扰动函数和反射函数的公式。
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