您要查找的是不是：
- This layer of rock contains a lot of flint. 这一岩层中有大量燧石。
- The inner layer of the wall of a spore. 孢子内壁孢子壁的内层
- primary tapetal layer 初生绒毡层
- There is a fine layer of dust on the desk. 桌子上有一层薄薄的尘土。
- tapetal layer 绒毡层
- The middle, usually fleshy layer of a fruit wall. 中果皮果皮中间通常含肉较多的那一层
- The bottom layer is a mixture of sand and clay. 最下面的一层是沙和泥的混合物。
- A fine layer of dust covers everything. 所有的东西都盖了一层薄薄的灰尘。
- A layer, as of doubled-over cloth or of paperboard. 一层一层，如折叠过的布料或纸板的
- A surface, layer, or mass of frozen water. 冰面冻结的水的面、层或块
- The tapetum are glandular type of characteristics. 营养层为泌腺性型。
- A thin layer of bone, membrane, or other tissue. 骨骼、粘膜或其它组织的薄层
- A thin, flat layer or scale, as that of a fish. 外表组织薄而平的一层或鳞状物，如鱼鳞
- TR: tapetal residues;E: exospore;P: perispore;G: globule. 成熟孢子壁近极面的横切,其附近可见小球;
- The form of tapetal cell nucleus is round or long elliptical. 细胞核有圆形和长椭圆形2种形态。
- Having a cortex or a similar specialized outer layer. 有皮的有皮的或具有相似的专门发育的外部覆盖的
- Histology of Lilium anther. Tapetum lining the pollen sacs. 百合花药结构,绒毡层衬在花粉囊内。
- The Ultrastructural Aspect of Tapetum in Paeonia Suffruticosa Andr. 牡丹绒毡层的超微结构。
- The anther is tetrasporangiate and glandular tapetum. 雄蕊花药四室，腺质绒毡层。
- A coat or layer enveloping an organ or a part. 被膜一种覆盖器官或身体部位的覆盖层或包被
