Olivine,as one MgO containing material,can be used as one type of fluxing additives for sinter,pellet and blast furnace.......

The value of assets comes essentially from their usefulness of the assets either in terms of their value-in-use or the v......

Although road agencies need to provide road infrastructure that is beneficial for road users,little is known about how t......

阐述了高校图书馆过刊的特点及其使用价值,探讨了高校图书馆过刊管理中存在的问题,提出了改革和完善高校图书馆过刊管理的思路与对......