engineering district；maintenance of way section；track division；track district；track maintenance division
Measuring Water Consumption District by District
Urban district and outside suburb district
20 years temporal and spatial variation
2-D spatial-spectrum estimation
2-D spatial-temporal adaptive processing
2-D spatial-temporal spectrum estimation
2-D temporal-spatial adaptive signal processing
2-scale temporal-spatial model
3D cadastre spatial entity
3D spatial data interoperability
3D spatial data structure