- 笛卡儿坐标制 díkǎ'érzuòbiāozhì Cartesian coordinate systemthe mathematical system that specifies each point in a plane by a pair of numerical coordinates
- 笛卡儿坐标系 díkǎ'érzuòbiāoxì Cartesian coordinate systema coordinate system that specifies each point uniquely in a plane by a set of numerical coordinates