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日本理音NL-27声级计/噪音计/分贝仪
1、符合计量法、JIS、IEC2、有107dB宽的线线范围，在30—130dB的噪音声级之内，无须进行范围切换即可测定。3、可测定噪音声级，等价噪音声级，噪音声级最大值，单发噪音暴露声级，峰值声压量程。
2017/4/12 4:10:21tonesoft
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2017/4/12 3:37:54tonesoft
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2017/4/12 3:19:13tonesoft
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2017/4/12 3:18:17tonesoft
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2017/4/12 3:12:05tonesoft
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2017/4/12 2:54:17tonesoft
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2017/4/12 2:37:09tonesoft
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2017/4/11 23:33:29tonesoft
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2017/4/11 23:14:02tonesoft
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2017/4/11 23:00:08tonesoft
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2017/4/11 22:47:43tonesoft
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2017/4/11 22:33:45tonesoft
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2017/4/11 22:31:57tonesoft
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2017/4/11 22:07:25tonesoft
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2017/4/11 21:42:35tonesoft
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2017/4/11 21:37:12tonesoft
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2017/4/11 21:23:58tonesoft
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2017/4/11 19:40:00tonesoft
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2017/4/11 19:23:19tonesoft
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2017/4/11 19:08:53tonesoft
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