 |
| |||
| singular point | |||
| distinguished vertex | |||
| 奇异点: 9 phrases in 5 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| General | 1 |
| Hydroelectric power stations | 1 |
| Technology | 5 |
|
| |||
| singular point | |||
| distinguished vertex | |||
| 奇异点: 9 phrases in 5 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| General | 1 |
| Hydroelectric power stations | 1 |
| Technology | 5 |