一对两个重要概念的界定1.供应链供应链一词出自英文的supply chain,至今未形成一个统一的、公认的定义。许多学者从不同的角度出发给出了不同的定义。大致上可以从早中晚三个时期来定义。早期的观点认为供应链是制造企业中的一个内部过程,它是指把从企业外部采购的原材料和零部件,通过生 Definition of a pair of two important concepts 1. The supply chain supply chain from the English supply chain, has not formed a unified, recognized definition. Many scholars have given different definitions from different perspectives. It can be roughly defined from the early, middle and late three periods. Early view that the supply chain is an internal process of manufacturing enterprises, it refers to the procurement of raw materials and parts from the enterprise, through students