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