| |||
| 柱上检测 | |||
| 联机［在线］检测 | |||
| 在线检测 | |||
|
on-line detection : 4 phrases in 4 subjects |
| Air defense | 1 |
| Chemistry | 1 |
| Technology | 1 |
| Water resources | 1 |
| |||
| 柱上检测 | |||
| 联机［在线］检测 | |||
| 在线检测 | |||
|
on-line detection : 4 phrases in 4 subjects |
| Air defense | 1 |
| Chemistry | 1 |
| Technology | 1 |
| Water resources | 1 |