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......

Based on more exquisitely preserved specimens of Markuelia hunanensis recently recovered from Middle and Upper Cambrian ......

基于最近在湘西中寒武-上寒武统发现的更多的精美保存的Markuelia hunanensis标本,并且借助于同步加速器辐射X射线层析显微技术,建......