Petroleum and nature gas not only are important resources,but also are important strategic materials of our country.All methods the enhancing the producing degr
Cement production is characterized by its great capacity, long-time delay, multi variables, difficult measurement and muhi disturbances. According to the distri
LiNi0. 5 Mn1. 5 O4 was prepared under various conditions by one-step solid-state reaction in air and its properties were investigated by X-ray diffractormetry (