| |||
| 单位位移 | |||
|
unit displacement : 5 phrases in 5 subjects |
| Aviation | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 1 |
| Textile industry | 1 |
| |||
| 单位位移 | |||
|
unit displacement : 5 phrases in 5 subjects |
| Aviation | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 1 |
| Textile industry | 1 |