Simultaneity, it is put forward a real multi-echelon system of supply chain that is applied to China SCH. , Ltd.

针对一个现实多级库存控制系统，以中国SCH电梯公司为代表，在供应链管理环境下建立了离散时序差分网络系统模型。

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It is through the concern system of the echelon concern, the situation concern and the marginal concern to reconstruct the psychology of the weak group.

通过建立梯度关怀、情境关怀和边际关怀等关怀体系企图实现弱势群体的心理重建。

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This dissertation studied the optimal theory of multi-echelon distribution system inventory structure from the perspective of product characteristics.

本文从商品性质的角度出发，对多级配送系统库存结构的优化理论进行了研究。

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The second accusation, that the Echelon surveillance system is now used for commercial gain, is particularly controversial and harder to prove.

ECONOMIST: Those perfidious Anglo spies

Various articles in the French press have claimed that Boeing, an American aircraft company, was given secret information on Airbus, its European rival, which could have been gathered only by using a system such as Echelon.

ECONOMIST: Those perfidious Anglo spies