1.
Where, following an abnormal condition, the removal of dust accumulations or layers cannot be assured, then the area is to be classified zone21.
如果不能保证排除可燃性粉尘堆积或粉尘层时，则应划分为21区。
2.
Determination of the minimum ignition temperature of dust layer
GB/T16430-1996粉尘层最低着火温度的测定方法
3.
They shut out the dust by having double windows.
他们用双层窗户防尘。
4.
Chimneys discharge smoke into the atmosphere
烟囱将烟尘排入大气层。
5.
The mirror is covered with a film of dust.
镜子蒙上了一层灰尘。
6.
The bookshelves were coated in dust. ; The bookshelves were coated with dust.
书架上积了一层灰尘。
7.
Technology of coal seam Short-wall water injection to realize dustproof
开展煤层短壁注水 实现煤层综合防尘
8.
The ground there is covered in dusty red soil,
它的表面覆盖了一层红色的尘土。
9.
There was a layer of dust on the books before I cleaned them.
在我擦拭之前，书上盖着一层灰尘。
10.
A fine layer of dust covers everything.
所有的东西都盖了一层薄薄的灰尘。
11.
The wind coated the washing with dust.
风给洗过的衣物盖上一层尘土。
12.
Misty it is still, glowing through clouds of dust and reek.
苍茫依然，光辉正穿透尘灰的层云。
13.
Voice : One hundred trillion tons of dirt and rock hurled into the atmosphere.
话外音：一百兆吨的尘石被抛入大气层。
14.
Study on the Dust Suppression Solidifying Agent Being Used in the Transport and the Piling of the Bulk Minerals;
矿物散料储运表层固化抑尘剂的研究
15.
Research on Characteristic of Plasma Sheath and Dust Particles in the Sheath;
等离子体鞘层及尘埃在鞘层中的特性研究
16.
STUDY ON THE SHARP BOUNDARY OF LAYERED DUST STRUCTURE IN THE SUMMER POLAR MESOPAUSE
极区夏季中层顶尘埃分层的锐边界结构研究
17.
Study of the Motion of Charged Particles and the Formation of Dust Crystal in Radio-frequency Plasma Sheath;
射频鞘层中尘埃粒子的运动过程及尘埃晶格形成机理的研究
18.
Theory of And Experimental Research into Dusting Efficiency of EGB;
静电增强颗粒层除尘器除尘效率的理论与实验研究