アランダム
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Meanings
1
alundum
A trademarked abrasive material made of fused alumina; used in grinding wheels, sandpaper, and industrial polishing.
Alundum is widely used as an abrasive material.
alundum
A trademarked abrasive material made of fused alumina; used in grinding wheels, sandpaper, and industrial polishing.
Alundum is widely used as an abrasive material.