Analysed and summarized the dynamics and chemical factors in the co (coagulation)-flocculation process. A completely new definition for co-flocculation was give
<正> Researched on the design and manufacturing of machine tool bed made by Steel-fibber Polymer Concrete(SFPC),which analyzed the static,dynamic and thermal pe
<正> The period of the minerals resource construction items is very long,which af- fected largely by the changeable market.The discontinuance evalution theory a