坐标系 zuòbiāoxì coordinate system Definitions Defs Origin Strokes Stroke Words Sentences Sents 极坐标系 jízuòbiāoxì polar coordinate system system of polar coordinates笛卡儿坐标系 díkǎ'érzuòbiāoxì Cartesian coordinate system a coordinate system that specifies each point uniquely in a plane by a set of numerical coordinates
