mean dust concentration 平均粉尘浓度 ; 粉尘平均浓度
safe dust concentration 安全含尘浓度
measurement of dust concentration 粉尘浓度测定 ; 粉尘浓度测量
Coal mine dust concentration transducer 煤矿用粉尘浓度传感器
dust concentration of coalpit 煤矿粉尘浓度
outlet dust concentration 出口含尘浓度
dust concentration in ice cores 冰心中粉尘浓度
The foam dust control technology was applied in Zaozhuang Coal Mining Group Xinyuan 12,211 roadway head, the results showed that ,foam dust removal efficiency were 2.11 times and 1.72 times higher than water spray respectively, the new technology reduced dust concentration effectively, with great significance in dust control.
将该技术在枣庄矿业集团新安煤矿新源12211轨顺掘进工作面进行了应用,现场测试结果表明泡沫对全尘和呼吸性粉尘的降尘效率分别是水雾除尘的2.11倍和1.72倍,有效地降低了井下采掘工作面的粉尘浓度,取得显著的防尘效果。
参考来源 - 煤矿井下泡沫除尘理论与技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Respiratory dust content in air I creases with raising of dust concentration.
说明空气中呼吸性粉尘的含量随着粉尘浓度的增高而增加。
The dust concentration distribution on the electric field section in ESP is not uniform, this is one of reasons to produce secondary blowing dust.
电除尘器内电场断面烟尘浓度呈非均匀性分布，它是产生振打二次扬尘的重要原因之一。
After dust mobilization in the desert in Northwest of China, dust was forced to transport to Southeast. Dust concentration was reduced while transportation.
沙尘在我国西北的沙地和沙漠地区起沙后，向我国的东南方向输送，在输送过程中沙尘浓度逐渐降低。
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