自制“记忆型”弹簧秤 设计“机械能守恒”创新实验
Publisher: 国家哲学社会科学学术期刊数据库
E-ISSN: 1002-042x|volume|11|25-27
ISSN: 1002-042x
Source: 物理教师, Vol.volume, Iss.11, 2015-01, pp. : 25-27
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Abstract