选区
Constituencies
Selective
exploration
SAED
selected
exploration area
Selecting targets
area selection
Selection of Groundwater Supplying Field
potential area selection
selective area
Precinct
electoral district
选层技术
Horizon-selected technique
测试选层
testing and selecting zone
变焦选层
Varifocal layer-selection technology
选井选层
Well and Layer Selection
Well and Zone Selection
selected well and layer
Selecting wells and layers
选层测量摆位
measurements and layer election
地方选区
geographical constituency
选区评价
selection and appraisal of exploration area