From the Angle of international trade theory, information economics and new system economics, the paper analyzes the conditions of relative rent existing in supply chain.
分别从国际贸易理论，信息经济学和新制度经济学的角度对供应链中关系性租金存在的条件作了分析。
The former is called the graded mine rent and the latter absolute mine rent and they are the excess profit obtained by the equation of existing income value.
前者就是级差矿租和绝对矿租（统称为矿租或矿山地租） ，是通过收益现值法公式计算出来的超额利润。
Among the 2 ~ 3 groups of blood vessels, one was identified existing constant, which arises from either the ulnar artery or the ulnar recur-rent artery and enters the original part of the muscle.
供应尺侧腕屈肌的血管有2 ~3组，以起自尺动脉或尺侧返动脉进入该肌起始部的一组血管最为恒定。
Among the 2 ~ 3 groups of blood vessels, one was identified existing constant, which arises from either the ulnar artery or the ulnar recur-rent artery and enters the original part of the muscle.
供应尺侧腕屈肌的血管有2 ~3组，以起自尺动脉或尺侧返动脉进入该肌起始部的一组血管最为恒定。
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