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- Firstly, on the printing plate coated with a layer of photosensitive layer, and then make the exposure, use acid bath for etching. 首先，在印版暗不天涂一层感平图层，然后举行曝平，诳骗酸浴举行蚀刻。
- 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
- 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 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
- 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
- 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
- Photosensitizer is very important in photodynamic therapy (PDT). 光敏剂是光动力治疗(PDT)中的重要组成，但因目前使用的光敏剂多为疏水性物质、在水中易团聚，从而影响了PDT对肿瘤的治疗效果。
- Objective To find new effective photosensitizer from Chinese herbs. 目的为了在中药里探索新的光敏剂。
- 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
- A layer of skin peeled off her sun-burnt back. 她晒黑的背上掉了一层皮。
- The pollution had destroyed ozone layer and caused many changes in weather. 污染破坏了臭氧层，并引起了许多天气变化。
- The layer spindle was an early development. 层式纺锤形是早期发展起来的。
- The altitude of the lowest layer of clouds. 云幕高度最低层云的海拔高度
- This cake has a layer of chocolate in the middle. 这蛋糕中间有一层巧克力。
