四个密度
Four densities
即人口密度、建筑密度、商业密度、旅游密度。降低核心区“四个密度”是首都功能核心区控制性详细规划所提出的优化核心区功能的重要任务。
They refer to population density, building density, business density and density of tourist activities. Reducing these "four densities" is a major task for improving functions of the capital's core zone, as outlined in the Development Control Plan for the Core Zone Serving Capital Functions.
