three-point loading

例句：

1. 1.The three-point loading system is designed to prevent accidents.
   三点加载系统旨在防止事故。
2. 2.The weight of the object being loaded is three times that of the point of support.
   被加载物体的重量是支点处重量的三倍。
3. 3.This method uses three-point loading to reduce stress on the joints.
   这种方法使用三点加载来减少关节的压力。