strata containing minerals是什么意思

用法例句

The study of characteristics of geology,geochemistry,lithogenesis and ore potentiality from Lianyujian deformation granite mass in Shangcheng of Henan,shows that SiO2 and K2O in low contents with Al2O3,TiO2,CaO,MgO,Fe2O3+FeO are high in contents;Na2O+K2O ranging from 7.

河南商城鲢鱼尖变形花岗岩岩体的地质、地球化学特征、成因及含矿性研究表明,岩体具有贫SiO2、K2O,富Al2O3、TiO2、CaO、MgO、Fe2O3+FeO之特征,Na2O+K2O为7。