单词oilstone
na.: 油磨石网络: 油石；油磨刀石；手用琢磨油石
油磨石
If scraping knife gap smaller, which can be oilstone or 2, smooth abrasive to fine sandpaper.
如果刮不朱刀上的缺口比辛庞大，可用油石或细砂纸打磨至光洁裂缝。
Development of New Type Diamond Honing Oilstone
新型金刚石珩磨油石的研制