carborundum [ˌkɑ:rbəˈrʌndəm]

例句:

• After setting, the surfaces of the specimens are ground down using carborundum and alumina.
  凝固之后, 样品表面连续用金钢砂或氧化铝磨平.
  
• The grinding block made of carborundum abrasive, is very hard and sharp.
  磨光机磨块采用金刚石磨料制成, 硬度极高,磨削锋利.
  
• We repair the burner brand with carborundum by the technique of ramming.
  我们采用碳化硅材料,利用捣打技术恢复一号炉卫燃带.