axial cross section

例句：

1. 1. The machine has an axial screw for adjusting the speed.
   这台机器有一个用于调整速度的轴向螺丝。
2. 2. The axis of the planet is perpendicular to its orbit.
   行星的轴线与其轨道垂直。
3. 3. The axial symmetry of the structure makes it stable and durable.
   结构的轴对称性使其稳定且耐用。