convex angle

例句：

1. 1. The car's front end is designed with a convex angle to improve stability.
   汽车的前部设计有凸角，以增强稳定性。
2. 2. The curved surface of the bridge has a convex angle that helps it resist bending.
   这座桥的弯曲表面有一个凸角，有助于它抵抗弯曲。
3. 3. The shape of this object is determined by its convex angles and recesses.
   这个物体的形状由它的凸角和凹角决定。