photoelectric dust meter 光电量尘计 ; [环境] 光电测尘仪 ; 光电测尘器 ; 光电测尘计

Piezobalance dust meter 压电天平测尘仪

digital dust meter 数字粉尘仪

dust trash meter 灰尘废料测定仪

mine dust density meter 矿尘浓度计

powder-dust sampling meter 粉尘取样仪

dust sampling meter 粉尘采样仪

dust concentration meter 烟尘浓度计