When the viscosity indexes of both polymers are greater than one, the viscosity of mixture calculated from viscosity additivity is lesser than that calculated from concentration additivity.
When the viscosity indexes of both polymers are greater than one, the viscosity of mixture calculated from viscosity additivity is lesser than that calculated from concentration additivity.
当二元体系的浓度指数都大于1时，粘度加和法得到的结果小于浓度加和法。