 |
| |||
| 系统运行控制 | |||
| system operations control: 25 phrases in 10 subjects |
| Air defense | 1 |
| Aviation | 5 |
| Business | 1 |
| Electronics | 6 |
| Mechanics | 1 |
| Metallurgy | 1 |
| Rail transport | 1 |
| Refrigeration | 3 |
| Space | 3 |
| Technology | 3 |
|
| |||
| 系统运行控制 | |||
| system operations control: 25 phrases in 10 subjects |
| Air defense | 1 |
| Aviation | 5 |
| Business | 1 |
| Electronics | 6 |
| Mechanics | 1 |
| Metallurgy | 1 |
| Rail transport | 1 |
| Refrigeration | 3 |
| Space | 3 |
| Technology | 3 |