axial module

例句：

1. 1. The machine has an axial drive system.
   这台机器有一个轴驱动系统。
2. 2. The axial symmetry of the structure is important for its function.
   这种结构的轴对称性对其功能至关重要。
3. 3. The axis of rotation is the line around which the object rotates.
   旋转轴是围绕其旋转的对象的线。