microwave modulated dual optical wavelength geodetic distance meter
distance between centres of lines；distance between centers of tracks；midway between tracks
distance offset distance
2000 Chinese Geodetic Coordinate System CGCS2000
2000 National Geodetic Coordinate System
80 geodetic coordinates
84 geodetic coordinates
astro geodetic net adjustment
astro-geodetic datum orientation
astro-geodetic deflection
astro-geodetic deflection of the vertical
astro-geodetic leveling
astro-geodetic net adjustment
astro-geodetic undulation
astrogeodetic net adjustment