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.
選擇非石雕功課工人60人作爲對照組：運用噪聲儀測定工作情況噪聲以及粉塵採樣器測定粉塵濃度狀況。
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;
噪聲測量分析儀器：聲級計、噪聲劑量計、噪聲統計分析儀、個人聲暴露計、倍頻程和1/3倍頻程濾波器；
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