If equation(2-1) was multiplied by dx,dy and dz,respectively and then addedtogether,we can writeHydrostatic pressure p is the function of coordinates,i.e. p=p(x,y,z),the totaldifferentiation of which is.When the two equations above were merged together,eq......(本文共 1389 字, 3 張圖) [閱讀本文] >>