| |||
| Sieböffnung f | |||
|
screen hole : 7 phrases in 4 subjects |
| Construction | 1 |
| Mining | 4 |
| Optics branch of physics | 1 |
| Sample preparation | 1 |
| |||
| Sieböffnung f | |||
|
screen hole : 7 phrases in 4 subjects |
| Construction | 1 |
| Mining | 4 |
| Optics branch of physics | 1 |
| Sample preparation | 1 |