The concentration of the suspended particles at transporting dregs was determined with a light scat cring dust meter constructing tunnel. 用光散射数字粉尘计对施工隧道装运碴时颗粒物浓度进行了测定。
The CEMS make up of the SO2/O2/NOX meter,the dust meter,the flow meter,the pressure transmitter,hygro-scope/temperature transmitter and the data acquisition system(DAS). CEMS系统由SO2/O2/NOX分析仪、烟尘仪、流量计、压力变送器、湿度/湿度计及数据处理单元(DAS)等部分组成。
The motor car disappeared in eddy of dust. 汽车在一片扬尘的涡流中不见了。
The forest will act as a defense against desert dust. 森林能起防御沙漠灰沙的作用。
The car raised quite a dust as we drove off. 我们走时车子扬起了一阵尘土。