graded potential造句

• Beginning with the features of regional geophysical and geochemical fields in bazinao - zhanggongshan area , combinied with the available data of regional basic geology , this paper has put forward five i or ii grade potential au , sn enrichment zones on the basis of geophysical and geochemical metallogenic conditions of regional strata , magmatic rocks and structures
  摘要从八字脑彰公山地区的区域地球物理场、区域地球化学场特徵分析入手，结合区内已有区域基础地质资料，研究了区域地层、岩浆岩、构造的地球物理地球化学成矿条件，提出了5个金、锡矿i 、级资源富集远景区。