 |
| |||
| 侧面间隙 | |||
| side gap: 12 phrases in 5 subjects |
| Electric machinery | 1 |
| Hydroelectric power stations | 3 |
| Metallurgy | 4 |
| Oil / petroleum | 2 |
| Technology | 2 |
|
| |||
| 侧面间隙 | |||
| side gap: 12 phrases in 5 subjects |
| Electric machinery | 1 |
| Hydroelectric power stations | 3 |
| Metallurgy | 4 |
| Oil / petroleum | 2 |
| Technology | 2 |