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| 分級度 River and Water Resources Glossary (Infrastructure Development Institute Japan) ; ふるい分け係数 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
| 篩分係数 (ふるいわけけいすう) | |||
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sorting coefficient : 1 фраза в 1 тематике |
| Общая лексика | 1 |