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Good thing I already calculated the density of bubble wrap.
看来这里确实需要用到汽泡纸的密度，多亏我们一早就把它算出来了。
youdao
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The mean charge depth and the charge density can be calculated.
电荷重心和电荷密度可通过计算得出。
youdao
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The mean charge depth and the charge density can be calculated.
电荷重心和电荷密度可通过计算得出。
youdao