Report copyright - Frequency analysis (bn1445) - Brüel & Kjær · ioooohz o 20 soohz 89 ioooohz o 32 20 500hz 88. o 32 20 500hz 86 ioooohz o 32 20 500hz 86. 20 90 ioooohz o 32 500hz 90 008
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