spline miller

例句：

1. 1.The engineer used a spline miller to cut the metal.
   工程师使用花键铣刀来切割金属。
2. 2. The spline miller was essential for the assembly process.
   花键铣刀对于装配过程至关重要。
3. 3. The spline miller was used to create precise cuts in the metal.
   花键铣刀被用来在金属上进行精确的切割。