 |
| |||
| 坐标原点 | |||
| coordinate origin: 6 phrases in 5 subjects |
| Bridge construction | 1 |
| Earth sciences | 1 |
| Hydroelectric power stations | 1 |
| Information technology | 1 |
| Space | 2 |
|
| |||
| 坐标原点 | |||
| coordinate origin: 6 phrases in 5 subjects |
| Bridge construction | 1 |
| Earth sciences | 1 |
| Hydroelectric power stations | 1 |
| Information technology | 1 |
| Space | 2 |