| |||
| Doppelwand f | |||
|
paroi double : 35 phrases in 14 subjects |
| Agriculture | 1 |
| Chemistry | 9 |
| Communications | 1 |
| Construction | 2 |
| Customs | 1 |
| Energy industry | 1 |
| General | 1 |
| Industry | 1 |
| Materials science | 6 |
| Mechanic engineering | 4 |
| Medical appliances | 3 |
| Metallurgy | 1 |
| Radiation | 3 |
| Transport | 1 |