白刚玉微粉还可用做触媒体，绝缘体以及精密铸造砂等。

Meanwhile, it can be used as catalyst carrier, insulator and precision founding sand, etc.

youdao

白刚玉微粉还可用做触媒体，绝缘体以及精密铸造砂等。

Meanwhile, it can be used as catalyst carrier, insulator and precision founding sand, etc.

youdao