hollow axle的用法和樣例：
例句
- Driving power for the cutting tool comes from the rotation of the spindle, which is a hollow shaft that rotates in bearings.
刀具的驅動(dòng)力來(lái)自主軸的旋轉，主軸則是一根在軸承中旋轉的空心軸。 - Make sure to cut pipe keeping the cut plane perpendicular to the axle.
切割管子時(shí)要使面與管軸保持垂直。
