Place the house sponge on the cinder block and place the brick with the carpenter's sponge sand paper and duct tape on top of the sponge.

将家用海绵放在空心渣煤砖上(作桌子用)，上面依次放置砖头、木匠用海绵、砂纸和胶带在海绵之上。

youdao

Grit, fly ash, cinder residue, active carbon, air brick detritus were used as filtering media according to proper proportion for low concentration domestic sewage treatment.

选取粗砂、粉煤灰、细煤渣、活性炭和空心砖粉块作为介质，再按适当的比例配成填料处理柱，进行处理低浓度生活污水的研究。

youdao

Grit, fly ash, cinder residue, active carbon, air brick detritus were used as filtering media according to proper proportion for low concentration domestic sewage treatment.

选取粗砂、粉煤灰、细煤渣、活性炭和空心砖粉块作为介质，再按适当的比例配成填料处理柱，进行处理低浓度生活污水的研究。

youdao