| |||
| 探测和报警 | |||
|
detection and alarm : 13 phrases in 5 subjects |
| Aviation | 1 |
| Hydroelectric power stations | 1 |
| Nautical | 9 |
| Nuclear and fusion power | 1 |
| Technology | 1 |
| |||
| 探测和报警 | |||
|
detection and alarm : 13 phrases in 5 subjects |
| Aviation | 1 |
| Hydroelectric power stations | 1 |
| Nautical | 9 |
| Nuclear and fusion power | 1 |
| Technology | 1 |