金剛砂

- corundum; silicon carbide; emery; emery powder; Carborundum; {材} amorphous carborundum; carborundum grain; diamond grain; electrolen; emery sand

金剛砂電爐carboradiant kiln

金剛砂檢波器{電} Carborundum detector

金剛砂輪Carborundum wheel

金剛砂磨床emery grinder

金剛砂磨刀板rifle

金剛砂拋光diamond polishing

金剛砂起絨工藝emerizing

金剛砂紙emery paper

金剛砂磚refrax

金剛砂鑽頭adamantine drill