noise measuring meter

基本解释

Choose a stone homework workers 60 people as control group: use noise meter measuring work environment noise and dust sampler determination of dust concentration.
选择非石雕功课工人60人作为对照组：运用噪声仪测定工作情况噪声以及粉尘采样器测定粉尘浓度状况。
Noise Measuring And Analyzing Instrument: Sound Level Meter, Noise Dose Meter, Noise Statistics And Analysis Meter, Noise Person Exposure Meter, Frequency Octave And 1/3 Frequency Octave Filter;
噪声测量分析仪器：声级计、噪声剂量计、噪声统计分析仪、个人声暴露计、倍频程和1/3倍频程滤波器；
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