 |
| |||
| 平衡圏 River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 緯線 (いせん) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
| 平行圈 (へいこうけん) | |||
|
parallel circle : 3 phrases in 1 subject |
| Technology | 3 |
|
| |||
| 平衡圏 River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 緯線 (いせん) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
| 平行圈 (へいこうけん) | |||
|
parallel circle : 3 phrases in 1 subject |
| Technology | 3 |