单词：projective conic
[数] 射影圆锥曲线
单词：projective conic 相关文章
One of South Korea's most powerful business leaders has avoided a prison sentence for alleged corruption. A South Korean court agrees the former chairman of Samsung evaded taxes, but it threw out more serious charges. VOA's Kurt Achin reports from S
发表于:2019-02-02 / 阅读(139) / 评论(0)
VOA标准英语2008年（七月）
VOA标准英语2008年（七月）