The pressure of human activities to the physical geographicalsystem in central urban area must be reduced during urbanization or re-urbanization.
在城市化和再城市化过程中，应大幅度减小中心城区自然地理系统所承受的高强度人类活动压力。
2
This paper makes a systematic analysis of the ability to resist drought, flood and waterlogging which are natural calamities of the physical geographicalsystem in Sichuan Basin.
本文对四川盆地自然地理系统抗御干旱、洪涝等自然灾害的能力，作了系统分析。
3
With your selected radar image, geographical coordinates in pixel (X,Y) form, and the programs described above, you can create a simple precipitation and alert-clearing system.