研けん磨ま機き

noun

grinder; grinding machine; polisher

A machine used for grinding, polishing, or smoothing surfaces, typically in industrial or workshop settings.

• この工こう場じょうでは、金きん属ぞく部ぶ品ひんを研けん磨ま機きで仕し上あげている。

  In this factory, metal parts are finished with a grinding machine.