| 摘要 |
<p>An abrasive machine for stones, which comprises one or more abrasive units and means for feeding the stones, each of said units having a plurality of abrasive tools each provided with a grindstone rotatably mounted thereto, said abrasive tools being arranged and driven along a circular line, whereby each of said grindstones can not only rotate but also revolve to grind and polish the stone surface contacting thereto.</p> |
