Oil Stained Yarn 油污纱
Electret air filter material has superior filter performance, so it is considered as ideal filter material for coal-dust stained yarn.
驻极体空气过滤材料具有优良的过滤性能，是治理“煤灰纱”的理想过滤材料。
The paper briefly introduces the reasons and conditions of coal dust stained yarn, and provides the method, which uses electrets as the material of filters to deal with coal dust stained yarn.
介绍了煤灰纱的成因及机理，提出了一种用驻极体作为滤料防止煤灰纱的方法。
A teenage worker uses dye-stained hands to hold a tangled nest of red yarn.
阿富汗的一个十几岁的工人，一个镇上居于胡勒姆（原塔什库尔干）的男孩子，用他被染料染过的手抓住缠在一起的红纱纱团。
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