turning moment diagram

例句：

1. 1. The turning moment diagram is used to analyze the forces acting on a rotating object.
   转动瞬心图用于分析作用于旋转物体的力。
2. 2. The engineer drew a turning moment diagram to show the forces acting on the gears.
   工程师绘制了一个转动瞬心图来展示作用于齿轮的力。
3. 3. The turning moment diagram helps us understand the forces involved in a complex mechanical system.
   转动瞬心图帮助我们理解复杂机械系统中涉及的力。