 |
| |||
| 三角闭合 (差) | |||
|
closure of triangle : 7 phrases, 4 sujets |
| Arpentage | 1 |
| Construction de ponts | 1 |
| Pétrole / pétrole | 1 |
| Technologie | 4 |
|
| |||
| 三角闭合 (差) | |||
|
closure of triangle : 7 phrases, 4 sujets |
| Arpentage | 1 |
| Construction de ponts | 1 |
| Pétrole / pétrole | 1 |
| Technologie | 4 |