stratum use层级使用stratumn.地层；阶层stratum reticulatum thalamus丘脑网状层stratum dentatum epidermidis表皮生发层Stratum corneum adhesiveness角质层粘连stratum griseum intermediale(拉)中灰(质)层stratum circulare ventricali胃环层stratum pigmenti bulbi oculi眼球色素层stratum griseum superficiale(拉)浅表灰(质)层stratum gangliosum cerebelli小脑神经节细胞层stratum spinosum epidermidis棘细胞层stratum granulosum cerebelli小脑粒层