Numerous goblet cells containing abundant mucigen granules interspersed among the columnar cells.

大肠黏膜上皮细胞排列松散，全部由上下粗细不均的柱状细胞组。

Finally,the most reasonable technological process of“stagewise grinding,coarse and fine classification,gravity separation magnetic separation reverse anionic flotation”has been found out.

推荐“阶段磨矿、粗细分级、重-磁-离子反浮选”为选矿合理工艺。