 |
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| 计算机应用系统 | |||
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computer application system : 5 Phrasen in 4 Thematiken |
| Landwirtschaft | 1 |
| Luftfahrt | 2 |
| Telekommunikation | 1 |
| Weltraum | 1 |
|
| |||
| 计算机应用系统 | |||
|
computer application system : 5 Phrasen in 4 Thematiken |
| Landwirtschaft | 1 |
| Luftfahrt | 2 |
| Telekommunikation | 1 |
| Weltraum | 1 |