The activity model of quarternary system CaO-FeO-SiO_2-V_2O_3 was established according to the coexistence theory of slag structure. 根据分子离子共存理论建立了CaO-FeO-SiO2-V2O3四元渣系活度计算模型。
The influence of various cations in the quarternary system of CaO-MgO-Al_2O_3-SiO_2 on the structure of slag glass analysed; 分析了CaOMgOAl2O3S1O2四元体系中各种阳离子对矿渣玻璃体结构的影响;
QTM ( Quarternary Triangular Mesh) structure on spherical surface is an efficient method in managing the global large quantities of the earth data. 球面四元三角网(QTM&QuarternaryTriangularMesh)结构是目前研究全球海量数据管理的有效方法之一。