Epithelial tissue is the pseudostratified ciliated columnar epithelium, more Fabricius nodes are located in the natural layer.
黏膜上皮全部为假复层柱状上皮，黏膜的固有膜内腔上囊小结也相对发达。
2
The anode and the cathode are arranged in the electrolyte. The anode is of the shape of a columnar roller and the metal layer is in contact with the anode.
所述阳极及阴极都位于所述电解液内，其中所述阳极具有一圆柱滚轮的外形，且所述金属层接触所述阳极。
3
The microstructure of the ceramic layer is columnar and its growth direction is perpendicular to the substrate surface.