The last, through experiments of flume and water tunnel, the liquid slip effect on drag-reduction over super -hydrophobic surface for various flow conditions was researched.
通过水槽和水洞的实验，研究了超疏水性表面在不同流动条件下的减阻特性。
The experimental results of the effect of base bleed propellant composition on the aerodynamic performance of drag reduction and range increase of base bleed projectile.
介绍了底排药剂成份对底排弹减阻增程气动力性能影响的实验结果。
It is found that the variation of planforms and geometrical parameters can effect only the drag reduction but little to the low lift in low angle of attack condition.
发现单纯改变涡襟翼的形式和参数能提高减阻效果，但不能改变小迎角下升力过小的现象。
The degradation of the polymer and its effect on the drag reduction are also discussed.
讨论了聚合物降解的情况及对减阻的影响。
The effect of lift enhancement with the Lorentz force acted on the tail is better than the front, and the drag reduction is better with the Lorentz force applied to the front.
电磁力作用在后部对升力的提升比作用在前部好，而覆盖在前部的减阻效果比作用在后部的好。
Parts of the pipes are dismountable so that we could investigate the drag-reduction effect of different pipe diameters.
实验管段部分可拆卸，以实现对常见管材不同管径的减阻效果研究。
Parts of the pipes are dismountable so that we could investigate the drag-reduction effect of different pipe diameters.
实验管段部分可拆卸，以实现对常见管材不同管径的减阻效果研究。
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