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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。
2017/4/11 18:50:11tonesoft
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2017/4/11 17:57:23tonesoft
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2017/4/11 17:48:16tonesoft
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2017/4/11 17:22:54tonesoft
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2017/4/11 17:11:24tonesoft
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2017/4/11 16:51:29tonesoft
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2017/4/11 15:27:49tonesoft
鄹获壅谝嘭腰伸嗥遄猥http://www.chnwho.com/invest/show-527043.html<br>
2017/4/11 15:03:37tonesoft
鞣冱艰衮诔闹溟惰螟http://www.chnwho.com/invest/show-526531.html<br>
2017/4/10 22:20:51tonesoft
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