Secondly, in conditions of non-steady flow, azinuthal velocity and shear stress distribution were deduced according to function approximation method.
在非稳流下，采用函数拟合法，得出流体切向速度随半径变化的表达式及流体所受切向剪切力和分布曲线。
2
The different approximation is applied to the laser system to calculate the stationary probability distribution of the colored loss noise model of Dye laser.