笛卡儿坐标系 díkǎ'érzuòbiāoxì Cartesian coordinate system Definitions Defs Origin Strokes Stroke Words Sentences Sents 笛 dí phonetic 卡 kǎ phonetic 儿 ér phonetic 坐标系 座標系 zuòbiāoxì coordinate system coordinate system used in geometry and physics
