axial mining

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 axis of the planet revolves around the sun.
   行星的轴心围绕太阳旋转。
3. 3. The axis of the Earth's rotation is in its polar regions.
   地球自转的轴心位于极地区域。