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| 断面係数 (danmen-keisū) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
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modulus of section : 3 phrases, 1 sujets |
| Général | 3 |
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| 断面係数 (danmen-keisū) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
|
modulus of section : 3 phrases, 1 sujets |
| Général | 3 |