在进行流体研究时，动力学相似和几何相似是两个最基本的条件。
The dynamic similarity and geometric similarity are the basic terms at studying fluid.
有趣的是，这些流体动力学的适应性变化和人类为了改进高速飞机在空气动力学方面的设计特点十分相似。
Interestingly enough, several of these hydrodynamic adaptations resemble features designed to improve the aerodynamics of high-speed aircraft.
这种系统的动力学行为与化学振荡非常相似。
The dynamic behaviour of the system is much similar to chemical oscillation.
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