迎角、旋成体的外形，尤其是头部的几何形状是细长前体出现非对称涡的关键因素。
Angle of attack and nose shape of bodies are key factors that asymmetric vortex occurs over slender bodies.
在逆向工程中，复杂外形产品的曲面边界曲线的品质，是影响产品外观设计质量的关键因素。
In reverse engineering, the character of surface border curve in complex contoured product is the key factor affecting the outlook designing quality of product.
在对蒜瓣外形特征进行测量并统计研究等基础上，设计了旋转式蒜瓣单粒定向取种器的关键部件-仿生种穴排种盘的结构形式。
Based on measuring, statistics and research on configurational characteristics of garlic clove, the key component of rotary garlic single-clove directional seed metering device is designed.
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