对课本上一道例题答案表达形式的质疑——兼谈动量守恒定律应用中正负号的使用

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1003-6148|35|6|40-41

ISSN: 1003-6148

Source: 物理教学探讨:中学教学教研版, Vol.35, Iss.6, 2017-01, pp. : 40-41

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Abstract