6462| 17
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SIA测试的显示分贝数是电压值吗,是不是加个话筒校准器就能准确测出声压值 |
发表于 2010-1-18 21:45
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发表于 2010-1-19 00:38
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发表于 2010-1-19 11:24
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发表于 2010-1-19 11:37
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发表于 2010-1-19 18:12
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发表于 2010-1-20 22:09
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