 |
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| Zweifachröhre f | |||
| double tube: 31 phrases in 13 subjects |
| Automobiles | 1 |
| Chemistry | 1 |
| Cycling other than sport | 2 |
| Earth sciences | 2 |
| Electronics | 2 |
| Medical | 1 |
| Metallurgy | 1 |
| Mining | 5 |
| Pharmacy and pharmacology | 1 |
| Physics | 5 |
| Sports | 1 |
| Technology | 4 |
| Радиоактивное излучение | 5 |