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CHAPITRE 1 : GENERALITES

CHAPITRE 1 : GENERALITES

CHAPITRE 1 : GENERALITES

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41,2 A x=10, aff 20log 8, 7dB 112 3. L’affaiblissement par unité de longueur : att=0,87 dB/m4. i(t,10) si Z C =50|-30°I( t,10) 0,82cos( t 56,6)9

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