2022年8月5日
grade, gradian, gradient
摘要： In trigonometry [三角学], the gradian [百分度], also known as the gon (from Ancient Greek: γωνία, romanized: gōnía, lit. 'angle'), grad, or grade, is a unit 阅读全文
posted @ 2022-08-05 16:50 华容道专家 阅读(205) 评论(0) 推荐(0)