| http://www.w3.org/ns/prov#value | - =ΔPR/2L γa =4Q/πR3 wherein ??P is a pressure difference between both ends of the fine tube, R is a radius of the fine tube, L is a length of the fine tube, Q is a flow amount of the liquid per unit time, and a is the apparent shear rate (or apparent velocity gradient) at a point on the wall. 7.
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