 |
| |||
| Arbeitsprinzip n | |||
| Funktionsprinzip n | |||
| operation principle: 10 phrases in 4 subjects |
| Computers | 2 |
| Earth sciences | 6 |
| Environment | 1 |
| Measuring instruments | 1 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips