Read Edit View history Discussion 投影线 tóuyǐngxiàn projection line Origin Definitions Defs Strokes Stroke Words Sentences Sents 投影线 投影線 tóuyǐngxiàn projection line the line along which an object is projected onto a surface; line of projection
投影线 投影線 tóuyǐngxiàn projection line the line along which an object is projected onto a surface; line of projection