在变换后的球面域上用球谐函数来拟合速度函数，达到降低球谐系数阶数的目的。
Representing velocities by spherical harmonic expansion on the sphere after transformation can greatly reduce the number of spherical harmonic coefficients needed.
在不考虑可压缩性因素时，滑移边界条件的阶数对阻力系数的影响较大，对换热系数的影响不是十分明显。
The order of slip boundary condition shows an apparent influence on the friction coefficient but only a slight influence on the Nusselt number if compressibility is ignored.
针对时滞、阶数和系数皆未知的离散时间线性随机控制系统（ARMAX模型），提出一种对时滞、阶数和系数同时进行递推估计的算法。
This paper proposes a new recursive estimate algorithm for unknown time-delay, orders and coefficients of linear discrete-time stochastic control systems (ARMAX model).
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