 |
| |||
| ★ 单元组装 | |||
|
unit assembling : 11 phrases in 6 subjects |
| Business | 1 |
| Ecology | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 1 |
| Shipbuilding | 3 |
| Technology | 4 |
|
| |||
| ★ 单元组装 | |||
|
unit assembling : 11 phrases in 6 subjects |
| Business | 1 |
| Ecology | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 1 |
| Shipbuilding | 3 |
| Technology | 4 |