The change rules of aerodynamic parameters including lift coefficient, drag coefficient and pitch moment coefficient have been analyzed when Angle of attack and fuel flow rate is changed.
考虑了不同飞行攻角、不同燃料流率下气动参数，包括升力系数、阻力系数和俯仰力矩系数的变化规律。
When the flow rate of the liquid slipping along the solid surface exceeds that of a critical speed, slipping will occur and drag reduction will be realized consequently;
当液体沿固体表面的流速超过临界速度时，出现滑移，这样能实现减阻；
When the flow of crude oil rate exceeds the average value, the optimizing operation using the transportation technology with drag reducer should be considered.
运行输量超过平均输量时，采用加剂输送工艺进行优化运行。
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