求翻译：图4为加入横向、纵向组合电磁场情况下，Al-K2TiF6组元在温度为750℃，反应物K2TiF6粉末的加入量为6070合金熔体质量的10%，控制励磁电流为150A、横轴、纵轴频率均为3Hz，作用时间为3min时，进行水淬式样分析时所得复合的凝固组织SEM图。对比如下:是什么意思？

Figure 4 for accession to the horizontal, vertical combination of electromagnetic field case, al-k2tif6 group at a temperature of 750 ℃, the reaction material k2tif6 powder the amount of the 6070 alloy of 10% of the melt mass, control the excitation current of 150a, the horizontal axis, vertical sha