This paper presents a kind of chimney lining material made from fly ash and cenospheres.

本文介绍一种以粉煤灰及空心微珠为主要原料制成的烟囱内衬材料。

youdao

This paper presents a kind of chimney lining material made from fly ash and cenospheres.

本文介绍一种以粉煤灰及空心微珠为主要原料制成的烟囱内衬材料。

youdao