近年来，许多文献对粉煤灰材料的应用作了大量的研究，但都没有对非蒸压承重粉煤灰砖进行过研究。

Recently, many researches about the application of fly ash brick have been conducted, but none of them are about non steam pressure and bearing brick.

youdao

近年来，许多文献对粉煤灰材料的应用作了大量的研究，但都没有对非蒸压承重粉煤灰砖进行过研究。

Recently, many researches about the application of fly ash brick have been conducted, but none of them are about non steam pressure and bearing brick.

youdao