Annular space
环形空间
环形间隙
环状空间
环形室
环形通道
环孔流速
计算器辅助设计
环隙
为此
Eccentric annular space
eccentricity of annular space
allocation of green space
city green space system
construction of green space
disaster shelter green space
disaster-prevention green space
Dwelling district green space
Ecological Green Space Network
Ecological Green Space System
Garden green space system