| |||
| 内管挿入 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
|
pipe insertion : 2 phrases in 1 subject |
| General | 2 |
| |||
| 内管挿入 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
|
pipe insertion : 2 phrases in 1 subject |
| General | 2 |