求翻译：玻化微珠是由较小粒度的珍珠岩矿砂在空气悬浮状态下经自动控制的电炉加热烧结而成的表面包覆一层玻璃体的近球体颗粒，表面玻璃体使玻化微珠的密度虽然比膨胀珍珠岩增大，但内部孔隙被玻璃体封闭，吸水率显著降低，因而保温层内部的热桥数量也会显著减少，保温效果明显改善。是什么意思？

Glass beads from the smaller size of the perlite ore in the state of the air suspension automatically controlled electric furnace by heating the coated layer sintered to nearly spherical particles of vitreous, vitreous surface density of the glass beads although the ratio perlite increases, but the

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Glass of micro-Pearl is by smaller grain of of Pearl rock ore in air suspended state Xia by automatic control of electric furnace heating sintering and into of surface package covered a layer vitreous of near sphere particles, surface vitreous makes glass of micro-Pearl of density although than expa

Glass beads from the smaller size of the perlite ore in the state of the air suspension automatically controlled electric furnace by heating the coated layer sintered to nearly spherical particles of vitreous, vitreous surface density of the glass beads although the ratio perlite increases, but the