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| Bodenecho n | |||
| Bodenechos n; Festzeichen n | |||
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| Bodenecho n | |||
| Masserückführung f | |||
| Anglais glossaire | |||
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| The desired echoes received from the ground by an airborne radar | |||
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ground-return : 11 phrases, 5 sujets |
| Communications | 3 |
| Instruments de mesure | 1 |
| Machines électriques | 1 |
| Technologie | 4 |
| Transport | 2 |