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- 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
- chitinous layer 壳质层
- There is a fine layer of dust on the desk. 桌子上有一层薄薄的尘土。
- 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 chitinous internal shell of a squid. 羽状壳乌贼的壳质的内壳
- 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
- A thin layer of bone, membrane, or other tissue. 骨骼、粘膜或其它组织的薄层
- Chitin has a tight connection with human life. 甲壳素与人类的生命有着密切的关系。
- 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
- Chitin Produced from crab &shrimp shells. 甲壳素 生产从螃蟹和虾炮弹。
- Their cell walls contain chitin or chitosan. 它们的细胞壁含有角素或壳聚糖。
- Chitin is a polymer of N-acetylglucosamine. 几丁质是N－乙酰葡糖胺。
- 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
- An epidermal layer of cells that secretes an overlying chitinous cuticle, as in arthropods. 分泌几丁质的细胞皮下细胞层，比层细胞隐匿一层全面覆盖的分泌几丁质的角质层，与类人猿中的情形一样
- High-property chitosan can be produced by chitin deacetylase. 而采用甲壳素脱乙酰酶能制备出性能独特的壳聚糖。
- 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
