About the Quality-oriented Education in Mathematics
han zhenfang 1 zhangqing 2 (1.college of mathematics and computer science; hebei university; baoding; 071051; 2. mathematics group; qinhuangdao finance and economics school; qinhuangdao; 066004)
Coupling in Inorganic Chemical Reaction
hao fenshan 1 liu fengqi 2 (1.chemistry dept.; zhangjiakou teachers college; zhangjiakou; 075028; 2. the no. 1 middle school of zhangjiakou city; zhangjiakou; 075000)