第一象限 dìyīxiàngxiàn first quadrant Definitions Defs Origin Strokes Stroke Words Sentences Sents 第一象限 dìyīxiàngxiàn first quadrant The upper-right section of a coordinate plane where both the horizontal and vertical values are positive.
第一象限 dìyīxiàngxiàn first quadrant The upper-right section of a coordinate plane where both the horizontal and vertical values are positive.
