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fluke 945噪音计/声级计/分贝仪
测量环境噪音（A加权）：30至130 dB， 0.1 dB分辨率，精度±1.5 dB 测量机械噪音（C加权）：35至130 dB， 0.1 dB分辨率，精度±1.5 dB 频率响应范围：31.5 Hz到8 kHz
2017/4/13 8:15:02tonesoft
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2017/4/13 8:04:17tonesoft
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2017/4/13 7:29:16tonesoft
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2017/4/13 7:25:05tonesoft
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2017/4/13 6:20:20tonesoft
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2017/4/13 6:17:33tonesoft
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2017/4/13 5:58:29tonesoft
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2017/4/13 5:37:59tonesoft
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2017/4/13 5:29:18tonesoft
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2017/4/13 5:24:45tonesoft
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2017/4/13 5:08:31tonesoft
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2017/4/13 5:08:04tonesoft
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2017/4/13 4:56:35tonesoft
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2017/4/13 4:38:08tonesoft
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2017/4/13 4:35:23tonesoft
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2017/4/13 4:31:34tonesoft
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2017/4/13 4:19:59tonesoft
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2017/4/13 3:17:10tonesoft
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2017/4/13 2:15:18tonesoft
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2017/4/13 2:09:38tonesoft
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