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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。
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2017/4/13 3:44:35tonesoft
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2017/4/13 3:19:40tonesoft
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2017/4/13 2:57:20tonesoft
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2017/4/13 2:56:52tonesoft
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2017/4/13 2:55:35tonesoft
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2017/4/13 2:33:32tonesoft
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2017/4/13 2:32:25tonesoft
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2017/4/13 1:34:14tonesoft
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2017/4/13 1:23:23tonesoft
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2017/4/13 0:08:31tonesoft
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