In this article, firstly the payoff of tie and the competitivecoefficient are combined, and a new utility function is constructed.
本文把关系收益和竞争系数结合起来，构建了新的效用函数。
2
Synthetic diamond is competitive in heat dispersing materials, because it has high thermal conductivity, low coefficient of thermal expansion and lower price.
人造金刚石由于其自身高的热导率、低的热膨胀系数和相对低的价格已成为制造新型散热材料的研究热点。
3
Through the calculation of grey relational coefficient and grey relational grade, finally fulfill the comparative analysis to enterprise's competitive ability.