片语
dual light path opacimeter双光程式不透光烟度计
densitometer比重计,浓度计;光密度计
photoelectric opacimeter光电式暗度计
smokemeter(用以测定烟雾的浓度或成分的)烟度计
partial-flow opacimeter部分流式消光烟度计
full flow opacimeter全流食烟度计
Bausch and lamb opacimeter包斯赫朗伯不透明度测定仪
physical response time of opacimeter烟度计物理反应时间
sampling opacimeter取样烟度计
smoke opacimeter[环境]
opacimeter r暗度计