However, the higher the filtration rate, or the presence of viscous or low porosity dust layer, should take a slightly higher value.

但若采纳较高的过滤速度，或存在粘性或低孔率的尘埃层，应取稍高的数值。

youdao

Analyzed the coal dust samples we collected, mensurated the minimum ignition temperature of coal dust layer and coal dust cloud in different diameter range.

对所采集煤尘样品进行实验分析，测定了不同粒径范围下煤尘层和煤尘云的最低着火温度。

youdao

Everything was covered with a thick layer of dust.

所有的东西都覆盖着厚厚的一层灰尘。

《牛津词典》

Cars are lined up in pairs, bumper to bumper, coated with a week-old layer of dust.

NEWYORKER: Baptizing the Gun

Under the glare of electric lights, I saw that the porcelain was coated with a layer of dust, the silverware dulled by tarnish.

NEWYORKER: Sweetheart Sorrow

The whole house had a layer of fine dust that had settled on all the surfaces.

CNN: E-mail from an inferno: Taking back our house