OK. In general you could extend this analysis to include vibrations, rotations, energy in a magnetical field, electricfield, et cetera. Any questions?
一般的,可以把上面的分析扩展到包含振动，转动以及电磁场能量等等，有问题吗？
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It sums up the definition, general expressing formula and general calculating method of flux in any vector field by analyzing the flux in the speed field, electricfield and magnetic field of fluid.