The city's population density has increased significantly over the years.
多年来，这座城市的人口密度显著增加。
Scientists are studying the density of various materials in the lab.
科学家正在实验室研究各种材料的密度。
The oil spill affected the water density in the region.
石油泄漏影响了该地区水的密度。
The forest has a high tree density, making it hard to navigate.
这片森林的树木密度很高，使得导航困难。
The density of the crowd made it difficult to move.
人群的密度使得移动困难。
They calculated the density of the gas using special equipment.
他们使用特殊设备计算气体的密度。
Urban planning must consider the density of the population.
城市规划必须考虑人口的密度。
The density of the fog reduced visibility on the road.
雾的密度降低了道路上的能见度。
The density of the material affects its strength and durability.
材料的密度影响其强度和耐用性。
High density living spaces can lead to noise issues.
高密度的居住空间可能导致噪音问题。
population density 人口密度
density of air 空气密度
energy density 能量密度
density matrix 密度矩阵
current density 电流密度
density gradient 密度梯度
bulk density 体积密度
复数: densities;
