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| doppelwandig | |||
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| zweiwandig; doppelwandig | |||
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| doppelwandig | |||
| à doubles parois: 26 phrases in 10 subjects |
| Chemistry | 7 |
| Communications | 1 |
| Construction | 1 |
| Energy industry | 1 |
| Industry | 1 |
| Materials science | 6 |
| Mechanic engineering | 2 |
| Medical appliances | 3 |
| Transport | 1 |
| Радиоактивное излучение | 3 |