The density of mitochondrial, the density of the surface number and averagecrosssection in the experiment group showed great distinction compared with the model group(P<0.01).
用药组的线粒体体密度、面数密度和平均截面积与模型组相比差异有非常显著意义（P< 0 0 1 ）。
2
You take the flux, multiply it by the crosssection, 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。
3
Algal growth rate is different with average velocity, water depth and cross-section width.