Reciprocating probe system
smoke detector system [probe type]
traveling in core probe system
variable-temperature probe system
1954 Beijing Coordinate System
1980 National Coordinate System
1980 Xi’an coordinate system
2000 Chinese Geodetic Coordinate System CGCS2000
2000 National Geodetic Coordinate System
3D cartesian coordinate system
3D geocentric coordinate system
a new fo rm of geodesic coordinate system
absolute coordinate system
abundance coordinate system