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......

By using the blossom approach, we construct four new cubic rational Bernstein- like basis functions with two shape param......

<正>In 2000,Wu presented two new types of generalized Ball curves,one of which is called an NB1 curve located between th......