忠实但不囿于教科书--以“几何区域”为例

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1009-864x|volume|07X|21-25

ISSN: 1009-864x

Source: 求学:理科版, Vol.volume, Iss.07X, 2017-01, pp. : 21-25

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Abstract