mine dust density meter 矿尘浓度计
mine dust density 矿尘浓度
sand-dust density 沙尘浓度
dust density distribution 粉尘浓度分布
raw gas dust density 烟尘初始排放浓度
initial dust-density emission 初始排尘浓度
dust mite density 尘螨密度
dust-storm density 沙尘浓度
Applying two-beam-optics to the transmission-model optical measurement of dust density, we have confirmed that the traditional difference method can not clean up the influence of light source fluctuating, temperature change etc.
将双光路差分法应用到透射式粉尘浓度测量，通过推导得出了传统差分方法不能有效消除光源波动、温度变化等因素带来的误差。
参考来源 - 透射式光学粉尘浓度监测技术研究及应用·2,447,543篇论文数据，部分数据来源于NoteExpress
Industrial dust density is the yardstick of the ESP's efficiency.
工业粉尘排放浓度是衡量电除尘器除尘性能的标准。
The design of flexible air inlet, advanced air flow even arrangement and pre-dedusting device satisfies different process arrangement and treats air with different dust density.
灵活的进气方式和先进的气流均布装置及预收尘装置的设计，使设备可以满足不同的工艺布局，处理不同含尘浓度的气体。
Both inflammation and explosion are chemical reactions, for which three prerequisites are required, i. e. certain fibre dust density, certain ignition energy andcertain oxygen density(%);
燃烧与爆炸都是化学反应，必须具备纤维粉尘达到一定浓度、遇到一定点燃能量、在空气中有一定含氧浓度（％）这三个条件。
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