| |||
| 监控指示器 | |||
|
monitoring indicator : 5 phrases in 5 subjects |
| Aviation | 1 |
| Ecology | 1 |
| Electric machinery | 1 |
| Politics | 1 |
| United States | 1 |
| |||
| 监控指示器 | |||
|
monitoring indicator : 5 phrases in 5 subjects |
| Aviation | 1 |
| Ecology | 1 |
| Electric machinery | 1 |
| Politics | 1 |
| United States | 1 |