boron carbide
Aspidophoroides monopterygius, a bottom-dwelling marine fish in the family Agonidae, which is found along the coasts of the northwestern Atlantic.
The pesticide malathion.
Absence of fear.
(inorganic chemistry) A binary compound of boron and carbon, B₄C, that is a very hard ceramic, and is used in tank armour, bulletproof vests etc.
技術者たちは、その卓越した硬度と軽量性のために、車両の装甲に炭化ホウ素（B4C）を採用した。
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