MIL-STD-912
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时间:2024-05-09 13:09:42
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MIL-STD-912, MILITARY STANDARD: PHYSICAL EAR NOISE ATTENUATION TESTING (11 DEC 1990) [NO S/S DOCUMENT]., This standard establishes the methodology and instrumentation requirements for quality assurance testing (QAT) for noise attenuation characteristics of hearing protective devices.
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