base lead angle

例句：

1. 1.The base lead angle of the car is 20 degrees.
   汽车的基础线角是20度。
2. 2. The engineer used a special tool to measure the base lead angle.
   工程师使用一种特殊的工具来测量基础线角。
3. 3.The angle between the two lines determines the base lead angle.
   两条线之间的夹角决定了基础线角。