Amott-Harrey relative displacement index

例句：

1. 1.The relative displacement index is used to measure the movement of objects in space.
   相对位移指数用于测量物体在空间中的运动。
2. 2. The index provides valuable insights into the behavior of materials under different conditions.
   该指数为了解材料在不同条件下的行为提供了宝贵的见解。
3. 3. By analyzing the data, we can determine the relative displacement of the two objects in the scene.
   通过分析数据，我们可以确定场景中两个物体的相对位移。