 |
| |||
| Zweifachröhre f | |||
| double tube: 34 phrases in 14 subjects |
| Automobiles | 1 |
| Chemistry | 1 |
| Cycling other than sport | 2 |
| Earth sciences | 2 |
| Electronics | 2 |
| Medical | 1 |
| Medical appliances | 3 |
| Metallurgy | 1 |
| Mining | 5 |
| Pharmacy and pharmacology | 1 |
| Physics | 5 |
| Sports | 1 |
| Technology | 4 |
| Радиоактивное излучение | 5 |