您要查找的是不是：
- A thin layer of bone, membrane, or other tissue. 骨骼、粘膜或其它组织的薄层
- The density of population in this city is very high. 这个城市的人口密度非常高。
- membrane density 比膜面
- The area had a population density of five people per square mile. 该地区人口密度为每平方英里五人。
- A thin skin or film, such as an organic membrane or a liquid film. 薄皮，薄膜如生物膜或液体膜等细薄的皮或膜
- A tightly stretched sheet or membrane, as on the head of a drum. 绷紧的薄膜状物挤压得很紧的平板或薄膜，如鼓面
- A vibrating membrane in the ear helps to convey sounds to the brain. 耳膜的振动帮助声音传送到大脑。
- The density goes down exponentially with height. 分子密度随着高度的上升而指数衰减。
- The population density is evened out. 种群密度亦趋于均匀化。
- The membrane of a bat's wing is interdigital. 蝙蝠翅膀的膜是长在趾间的。
- Density exceeded 100 nests per mile. 丝巢密度超过每英里100巢。
- This membrane is semi-permeable. 这层膜是半渗透性的。
- Do you know the density of population in this area? 你知道这个地区的人口密度吗?
- A fold or ridge, as of skin, membrane, or shell. 皱襞如皮肤、膜或壳的褶或隆起物
- This wave of excess density is sound. 这种过剩密度的波就是声波。
- The density logger consists of a radiation source. 密度测井仪包括辐射源。
- Such membrane lipids are amphiphatic molecules. 这种膜的类脂是一种有两种亲和性的分子。
- Methods Investigating the rodent density by ELTON. 方法用ELTON夹夜法对鼠密度进行调查。
- Of or relating to the skin and a mucous membrane. 粘膜与皮肤的皮肤和粘膜的或与皮肤和粘膜有关的
- By the charge density we mean the per unit volume. 所谓的电荷密度是指单位体积的电荷。
