51问答网 > 求问好心人10平方塑铜线多少钱一米

求问好心人10平方塑铜线多少钱一米

2025-04-02 09:45:16
推荐回答（1个）
回答1：

25平方是平方毫米=25*10^(-6)平方米一共是75*10^(-6)平方米乘以一米等于75*10^(-6)立方米乘以铜的比重8.89吨/立方米即8890kg/m3等于0.66675kg

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