 |
| |||
| 开关序列 | |||
|
switch sequence : 9 phrases in 8 subjects |
| Electronics | 1 |
| Geophysics | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 1 |
| Shipbuilding | 2 |
| Space | 1 |
| Technology | 1 |
| Telecommunications | 1 |
|
| |||
| 开关序列 | |||
|
switch sequence : 9 phrases in 8 subjects |
| Electronics | 1 |
| Geophysics | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 1 |
| Shipbuilding | 2 |
| Space | 1 |
| Technology | 1 |
| Telecommunications | 1 |