By using a simple analytic method the following inequalities are proved:(bx+y-ax+y)/(bx-ax)≥[(x+y)/x][(a+b)/2]y,for 0＜a＜b......

水泥工业作为国民经济建设的重要基础材料产业而备受关注。然而,水泥加工生产对能源的高消耗和对环境的高污染也同样备受争议。因......