This paper is to have a discussion,respectively,on the causes of pragmatic failure and on the resolutions to it in Engli......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

This paper is to have a discussion ,respectively ,on the causes of pragmatic failure and on the resolutions to it in Eng......