reaming with step reamer

例句：

1. 1. The car's engine has a reaming on the side.
   这辆汽车的引擎侧面有一个锯齿。
2. 2. The tool has a reaming that can be adjusted to fit different sizes of holes.
   这个工具有一个可调节的锯齿，可以适应不同大小的孔。
3. 3. The metal was machined with a reaming to ensure it fit perfectly into the socket.
   金属被加工成带有锯齿的形状，以确保它完美地插入插座。