སྒང་གཤོང་ས་ཁྲ། མཐའ་རིས་ས་ཁྲ།
phys. A topographic map on which the shape of the land surface is shown by contour lines, the relative spacing of the lines indicating the relative slope of the surface. […]
phys. A topographic map on which the shape of the land surface is shown by contour lines, the relative spacing of the lines indicating the relative slope of the surface. […]