main spindle box的用法和樣例：
例句
- Spindle feeds and speeds are controlled by selector levers which engage the proper gears in the drill head.
主軸的進能量和轉速是通過選速桿使主軸箱中的適當齒輪相嚙合而控制的。 - Finally headstock's solid state frequency is big, is mainly the main electrical machinery, the second-level decelerator and the box body vibrates in a big way.
結果主軸箱的固態頻率較大，主要是主電機，二級減速箱和箱體振動較大。
