| |||
| 平面曲線 (heimen-kyokusen) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
| 水平曲線 (すいへい・きょくせん) | |||
|
horizontal curve : 2 phrases in 1 subject |
| Technology | 2 |
| |||
| 平面曲線 (heimen-kyokusen) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
| 水平曲線 (すいへい・きょくせん) | |||
|
horizontal curve : 2 phrases in 1 subject |
| Technology | 2 |