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- Just getting this far required using single particle electron cryomicroscopy (cryo-EM) to produce three dimensional density maps of the molecule at sub-nanometer resolution. 为了看得更清楚起见，我们需要运用用于原生颗粒的冷蚀刻电子显微镜来观察在亚纳米分辨率下产生的三维分子图像。
- dimensionless density 无因次密度
- The density of population in this city is very high. 这个城市的人口密度非常高。
- 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。
- 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。
- Density exceeded 100 nests per mile. 丝巢密度超过每英里100巢。
- Do you know the density of population in this area? 你知道这个地区的人口密度吗?
- 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。
- Methods Investigating the rodent density by ELTON. 方法用ELTON夹夜法对鼠密度进行调查。
- 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。
- The numerical procedure has been derived in dimensionless form. 数值程序是按无因次形式推导的。
- Dimensionless quantities in physics are those that require no unit. 物理学中无量纲的量就是不需要单位的量。
- The entropy density is constant ahead of the shock. 冲击波前方的熵密度是恒定的。
- The driver had to stop because the density of the fog made it difficult to see. 由於浓雾使道路很难看清,司机不得不停车。
- Mercury has a much greater density than water. 水银的密度比水大得多。
- Yarn number is a measure of linear density. 纱线细度是纱线线密度的一种度量方法。
- Off-diagonal elements of density matrix go to zero. 经典定义:密度矩阵非对角元趋于零。
- Control of density by mass flow controller etc. 通过质量流量控制器等来实现的密度控制。
