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| Kernbereich m | |||
| Kerngebiet n; Kernraum m; Schwerpunkt m; Hohlräume m (im Blockstein) | |||
| Fokus m | |||
| Kernflaeche eines Lueftungsgitters | |||
| Kernfläche eines Lüftungsgitters | |||
| Kernfläche f | |||
| core area: 9 phrases in 7 subjects |
| Commerce | 1 |
| General | 2 |
| Measuring instruments | 1 |
| Mechanic engineering | 1 |
| Mechanics | 1 |
| Metallurgy | 1 |
| Optics branch of physics | 2 |