临界密度 meaning in English
critical de ity
critical density
Examples
- The matching conditions for backscatter can be satisfied at all densities from below quarter - critical downwards
仅从低于1 / 4临界密度来看，后向散射的匹配条件在所有密度时都能满足。 - If the density of matter and energy in the universe is less than the critical density , the space curvature will be negative
事实上，宇宙中暗物质和暗能量的多寡决定了宇宙的几何结构。假若宇宙中的物质和能量的总密度低于临界密度，它是一个空间曲率 - As an extension of the big bang theory , inflation theory predicts the universe density is rather close to the critical density . thus , the universe is flat
根据为改进大爆炸理论而发展出来的暴胀理论，宇宙密度必定接近于临界密度，所以宇宙应是平坦的。 - The space geometry is open and negatively curved as a saddle . if the density equals to the critical density exactly , the space is flat as a sheet of paper . if the density is greater than the critical density , the space geometry is closed and positively curved as a ball
为负马鞍形的开放宇宙假若密度和临界密度相等，空间曲率为零，宇宙如一张白纸般平坦假若密度高于临界密度，它则是一个空间曲率为正球形的封闭宇宙。 - An improved one - dimensional ca traffic model was proposed to describe the freeway traffic under the periodic boundary conditions . this model was based on the nasch model , it can describe stop - and - go traffic , which gives a better description of the phenomena observed on highways with a slow - to - start rule
在元胞自动机交通nasch模型和fi模型的基础上，基于交通流中实际车辆的慢起动行为，进一步提出一种新的一维交通流元胞自动机模型，在临界密度附近，存在着亚稳态和滞后现象。