| |||
| 传号反转码 | |||
|
mark inversion code : 10 phrases in 4 subjects |
| Automobiles | 1 |
| Information technology | 3 |
| Oil / petroleum | 2 |
| Telecommunications | 4 |
| |||
| 传号反转码 | |||
|
mark inversion code : 10 phrases in 4 subjects |
| Automobiles | 1 |
| Information technology | 3 |
| Oil / petroleum | 2 |
| Telecommunications | 4 |