 |
| |||
| 保护; 加以保护 | |||
|
relay out : 23 phrases in 6 subjects |
| Compressors | 1 |
| Electric machinery | 3 |
| Electronics | 5 |
| Hydroelectric power stations | 2 |
| Metallurgy | 1 |
| Technology | 11 |
|
| |||
| 保护; 加以保护 | |||
|
relay out : 23 phrases in 6 subjects |
| Compressors | 1 |
| Electric machinery | 3 |
| Electronics | 5 |
| Hydroelectric power stations | 2 |
| Metallurgy | 1 |
| Technology | 11 |