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| skikt; klass | |||
| lager | |||
| lindningsplan | |||
| stratum | |||
| funktionsskikt | |||
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| E-skikt | |||
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| troposfärskikt | |||
| طبقة: 37 phrases in 12 subjects |
| Antennas and waveguides | 1 |
| Electronics | 2 |
| Environment | 7 |
| General | 2 |
| Isolation | 1 |
| Mathematics | 1 |
| Microsoft | 11 |
| Radio | 6 |
| Radiology | 2 |
| Semiconductors | 1 |
| Statistics | 1 |
| Vacuum tubes | 2 |