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| 見かけの比重 River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 見掛け比重 (mikake-hijū) Engineering and Science Technical Dictionary (James Friend) ; 仮比重 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
| 見かけ比重 (みかけ・ひじゅう) | |||
| 見掛比重 (みかけひじゅう) | |||
