difference in hydrostatic pressure造句

There is, however, a difference in hydrostatic pressure between the source and the sink, due to the greater weight of the liquid in the longer outlet leg.
This pressure difference is generally due to a difference in hydrostatic pressure caused by a difference in depth between lung and counterlung, but can be modified by ballasting the moving side of a bellows counterlung.
where J _ w is water flux, A is the hydraulic permeability of the membrane, ?? is the difference in osmotic pressures on the two sides of the membrane, and ?P is the difference in hydrostatic pressure ( negative values of J _ w indicating reverse osmotic flow ).
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