So after analyzing the effects of inventory centralization/decentralization on safety stock and transportation,we try to find the mathematic formulation express the relationship between the safety stock and transshipment in two-echelon systems.

It is beyond question that Copyright Law endows the press with the right of reprint and excerpt.

This paper analyzed the Language and Literature articles carried in Xinhua Abstracts,China Social Sciences Digest,and China University Academic Abstracts between 2000 and 2005 reprinted from liberal arts journals,and found some characteristics of proportions,units and contents of reprinting articles,which is helpful of finding the questions and improving the work of university journal.

Direct to loading coal at transpersite can increase amount of dust density,and cause serious influence to the workers' health and safety of factory,expounds the mechanism of dust separating out and the harm of the dust,and combined with the present dust controlling technology in coal preparation plant at home and abroad,makes some comprehensive discussion of effective administration of the dust.

Because of having certain drop height, a mass of fugitive dust is created in the transpersite, re.

Fully mechanized coal caving face in the recovery process,the forward Loader problem becomes particularly prominent,with coal mining how loader direction and velocity accurately,as a need to move quickly to solve the problems that in this paper,the problem,the design an.

The practice of technological improvement on convey-turn loss and second briquetting in briquet factory;