axial rake angle

例句：

1. 1. The machine has an axial gear system for easy adjustment.
   这台机器有一个轴向齿轮系统，便于调整。
2. 2. The axis of the planet is perpendicular to its orbit.
   行星的轴线与它的轨道垂直。
3. 3. The axial symmetry of the structure makes it easier to design.
   结构的轴对称性使得设计更加容易。