In this article,the lattice model of liquid and the expression of liquid viscosity have been extended to elucidate the relationship between viscosity of polymer melts and molecular weights.

• 在教学实践中，借助于小分子液体模型和液体粘度表达式，结合高聚物结构的特点，阐明了高聚物熔体粘度与分子量的关系。