geometric libration

例句：

1. 1. The angle between the two lines is geometric libration.
   这两条线之间的夹角是几何倾斜。
2. 2. The engineer calculated the geometric libration of the bridge.
   工程师计算了桥梁的几何倾斜。
3. 3. The satellite's position was determined by measuring its geometric libration.
   通过测量卫星的几何倾斜来确定其位置。