quasi-convexity

例句：

1. 1. The shape of the object is quasi-convex, which means ithas a slight tendency to be concave.
   这个物体的形状是近似凸的，这意味着它有轻微的凹向倾向。
2. 2. Inmathematics, quasi-convexity refers to the property of asurface that allows for the existence of certaintypes of geometric shapes.
   在数学中，近似凸性指的是一个表面所具有的属性，使得某些类型的几何形状存在。
3. 3. The quasi-convexity of the surfacecan affect the stability and strength of thestructure.
   表面的近似凸性会影响结构的稳定性和强度。