Annular space
环形空间
环孔流速
环形室
环形通道
计算器辅助设计
环隙
环形间隙
环状空间
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
Eco-green space resources of waterfront
ecologic green space system