实时坐标转换
Real time coordinate transformation
瞬时坐标系
instantaneous system of coordinates
坐标时间序列
time series of coordinates
coordinate time series
平面地理坐标与墨卡托投影
plane geographic coordinate with mercator’s projection
坐标与方格发生器
Coordinate and check generator
光目标坐标方位仪
optical target coordinator
目标坐标系
coordinate frame of target
target coordinates