slitting saw sharpening machine

例句：

1. 1. This saw sharpening machineis very useful for woodworking.
   这台锯条磨光机对于木工来说非常实用。
2. 2. The engineer used the sharpeningmachine to make the blades sharper.
   工程师使用磨光机使刀片更锋利。
3. 3. The sharpening machine was designed toimprove the cutting efficiency of the saw.
   磨光机的设计目的是为了提高锯条的切割效率。