Since the intensification of urbanization, it not only brought great economic benefits, but also the population explosion, excessive building density, terrible traffic jam, and other problems.
城市化进程的不断加剧，在产生巨大经济效益的同时，也带来了城市人口膨胀、建筑密度过大、交通严重堵塞、环境持续恶化等一系列的问题。
Economic threshold for this pest insect was estimated by measuring the increasement rate of population density.
并提出用害虫种群潜在密度确定卷叶螟经济阈值的方法。
On spatial, there are high pollutants concentrations in active economic areas with high density of population.
空间上，经济活跃、人口密集点污染物浓度高。
Population density of more serious for China in the right neck, right state of information was followed by economic inequalities.
生齿密度为中国于较年夜严重有权在脖子上，右其次经济不服等况材料。
Population density of more serious for China in the right neck, right state of information was followed by economic inequalities.
生齿密度为中国于较年夜严重有权在脖子上，右其次经济不服等况材料。
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