Taking bidirectional supply chains as its background, this present paper makes an analysis of the cooperation strategies taken by participants on the supply chains under different degrees of cooperation. In this study, a two-dimensional partner evaluation system is established, with experts participating into the evaluation of partner candidates. The triangular fuzzy theory is used to quantify the degree of cooperation among participants, and partner selection and evaluation approaches are thus explored and verified by an example.% 本文以双向供应链为研究背景，分析该类供应链上的参与者在不同合作程度时分别采取的合作策略。建立一套二维的合作伙伴评价体系，由评选专家参与对候选合作伙伴的评价；借助三角模糊理论将参与者间的合作程度进行量化识别，研究在该背景下的合作伙伴的选择与评价的方法，并以一个例子验证该方法。
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