以下为句子列表：
英文: Baking-free brick was made by using fly ash, sand, cement and other industrial wastes, which makes the cost of material low.Furthermore, when it was made, the degree of mechanization is very high, using few workers, production cycle is short, thus the cos
中文: 免烧砖是采用粉煤灰、砂子、石粉、矿渣等工业废渣按一定比例加入水泥振动，强力压制而成，原料来源价格低，加之生产时机械化程度高，用人少，生产周期短，因此成本低，免烧砖的价格比红砖低，装卸时不容易损坏边角，且没有粉尘，卫生条件好，对人体的呼吸道伤害小。
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