According to control theories, mine fires can be considered as an unsteady process after the normal ventilation system is disturbed. Applied the principal of ph
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