image database for control point
flight plan for aerial photography
aerial ground electrical power vehicle
frozen ground for many years
Ground Control
地面控制
地面管制
矿压控制
基线
岩层控制
控制
地平绵
接地控制
ground control equipment
ground control points GCP quantity
ground control points(GCP) quantity
key stratum theory in ground control
prewetting method for ground treatment