Subordinate function of evaluation index is determined by means of triangle whitenization function . the potential difference of the area is evaluated through gray cluster . conceptual model that estimates energy of the science & technology productivity is built up relying on the thought of the strength potential energy for support 第三部分着重定量研究,以长三角三省为实例,用三角白化权函数的灰色聚类评估评价区域的位势差,并借重力势能的思想构建了科技生产力流动势能能量测度的概念模型。