Focus on resolving the environmental air quality in Hanoi is the same time affecting the source of pollution sources for the industrial, transportation, life and elements of a part, such as green plants to purify the air, water parameters and the choice of researchNot to study the regional scope: the old city of Hanoi. X20km 20km in the size range of the study area
đang được dịch, vui lòng đợi..