圆锥曲线“垂轴线”的一个性质与两组“姊妹”结论
Publisher: 国家哲学社会科学学术期刊数据库
E-ISSN: 1005-9741|volume|3|8-9
ISSN: 1005-9741
Source: 河北理科教学研究, Vol.volume, Iss.3, 2015-01, pp. : 8-9
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Abstract