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Gasdurchfluss | Proportionalzähler
| Proportionalzähler | |
| gen. | proportional counter |
| anal.chem. | proportional counter |
| nucl.phys. радиоакт. | proportional counting assembly |
| Gasdurchfluss: 18 phrases in 3 subjects |
| Municipal planning | 1 |
| Natural sciences | 1 |
| Радиоактивное излучение | 16 |