Therefore, should replace the timing of adsorption on the roof of the barn with cotton filter cotton and paint room on the floor.

因而，应当定时替换喷塑烤房顶棚上的过滤棉和烤漆房地板上的吸附棉。

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Sonic composite filter media: can be imprint all kinds of patterns. Static cotton in the middle. It can absorb the dust strongly and conforming to the environmental requirement.

超音波压花滤材：可压印各种精美花纹，中间夹静电棉，有极强的吸尘效果，无介质粘合，符合环保要求。

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Cotton fibers were induced from cotton ovule callus cells by suspension culture, float culture or filter paper bridge culture.

用棉花胚珠切块诱导愈伤组织，经悬浮振荡培养、漂浮培养、滤纸桥法等方法诱导成纤维细胞。

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