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| technique des impulsions | |||
| méthode par impulsions; méthode par échos | |||
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| techniques de transmission par impulsions | |||
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pulse technique : 13 phrases in 8 subjects |
| Communications | 3 |
| Electronics | 2 |
| Metallurgy | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 1 |
| Radiation | 1 |
| Technology | 3 |
| Transport | 1 |