本溪组底部相关论文
It is believed for a long time that there lacks Upper Ordovician to lower Middle carboniferous an the North China Plate.......
山东省冶金勘探公司原501队,在淄博煤田湖田矿区北部进行铝矿勘探时,有18个钻孔发现,在本溪组底部有较规则的三层可采煤层。同时,......
