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7.85x10³kg/m³等于多少g/mm³
人气:275 ℃ 时间:2020-04-26 07:01:54
解答
7.85x10³kg/m³ = 7.85x10³x10³g/(10³mm)³
= 7.85x10^6g/10^9mm³
= 7.85x10^(-3)g/mm³
= 0.00785g/mm³
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