Al2O3-SiO2超细粉体
Al2O3-SiO2 ultrafine powder
Al2O3细粉
basic castable refractory
Bi2O3超细粉体
bismuth trioxide superfine powder
LaCoO3超细粉末
ultrafine perovskite-type LaCoO3
ZrO2超细粉末
ultrafine zirconia powder
饱和粉细砂地基
water-saturated granular foundation
饱和粉细砂土层
saturated fine silty sand ground