asymmetric vortex pattern 非对称涡系
free vortex flow pattern 自由涡流型
free-vortex flow pattern 自由涡流型
Double-vortex flow pattern 双涡管式结构
Fret is a very popular decorative art that originally derives from vortex pattern and signifies continuity and universal presence.
回形纹是古今中外装饰图案中非常流行的一种，最初应源于旋涡纹，具有延绵不断、亘古不变的含义。
The vortex is one of the important features of flow field. This paper detects the vortex flow based on pattern matching method.
涡流是流场的重要特征之一，本文采用基于模板匹配的方法来识别流场的涡流特征。
Physically, at a special critical wave speed the flow may have a naturally periodical separated-reattached pattern, with each wave trough capturing a stable vortex ring.
物理上看，在一个特定的临界行波速下会形成自发的周期性分离再附流，每个波谷的分离区捕获一个稳定的涡环。
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