Cross multiply 交叉相乘
differential-cross multiply 微分
Cross-multiply and prioritize 相乘并排序
Cross s multiply 交叉相乘
And I can cross-multiply here.
然后再交叉相乘。
You take the flux, multiply it by the cross section, average it, integrate it over the whole volume.
你拿流量乘以横截面,平均它,乘以它除以总容积。
So, the number of nuclei, 119 if we were to sit and count these as well, is 119. So, we'll multiply that by just pi, r squared, to get that cross-section, and divide all of that by 1 .
如果你们数的话,原子核的数是,我们用它乘以πr的平方,得到横截面积,除以1。
And I can cross-multiply here.
然后再交叉相乘。
So, the number of nuclei, 119 if we were to sit and count these as well, is 119. So, we'll multiply that by just pi, r squared, to get that cross-section, and divide all of that by 1 . 39 meters squared.
如果你们数的话,原子核的数是,我们用它乘以πr的平方,得到横截面积,除以1。39平方米。
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