镁钙碳砖是一种经济又实用的包衬材料。

Magnesium-carbon-calcium fireproof brick is a kind of economical and practical ladle liner material.

youdao

镁钙碳砖是一种经济又实用的包衬材料。

Magnesium-carbon-calcium fireproof brick is a kind of economical and practical ladle liner material.

youdao