环状片层(annulate lamellae,AL) 是一种膜性细胞器，其结构单位类似内质网的潴泡， 由2—100个片层结构平行排列而呈弧状或同心圆状 动物细胞的环状片层主要存在于卵母细胞、肿瘤细胞及胚胎细胞中， 膜上经常规律性地分布着与核孔十分相似的膜孔复合体(pore complex)。
两类环状片层的区别仅在于后者存在膜状结构。
The origin and function of the membrane-like structure have not been found out yet.
结果还讨论了卵黄核、合成泡及环状片层等细胞器的超微结构与功能的关系等。
The relationship between ultrastructure and function of some organelle, such as yolk nucleus, synthetic vesicle and annulate lamella are also discussed in this paper.
所述的换向器在无纬带绑扎层表面粘接有绝缘胶泥密封层，在换向片端部有一环状沟槽。
The insulating rubber sealing layer is stuck on the surface of the unidirectional weftless tape banding layer for the commutator. The ring groove is arranged at the end of the commutator plate.
应用推荐