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......

MAOTIAN is a cap-shaped mountain 52 km southeast of Kunming， the capital of Yunnan Province. It came to public attention ......

云南澄江县七江矿区磷矿赋矿层位为寒武系下统渔户村组(∈1y),矿体呈层状赋存于渔户村组砂质白云岩及细粒砂岩中,矿石以内碎屑结构......