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koperta | |||
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amplituda sygnału | |||
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obwiednia sygnału |
envolvente: 25 phrases in 11 subjects |
Agriculture | 1 |
Antennas and waveguides | 2 |
Communications | 2 |
Electric motors | 3 |
Electronics | 5 |
Environment | 1 |
Fish farming pisciculture | 6 |
Mineral products | 1 |
Radio | 1 |
Telegraphy | 1 |
Transport | 2 |