sand cinder concrete
常見例句
- Study is made on preparation of small concrete hollow block using cinder wet discharged from power plant instead of sand by laboratory and industrial experiments.
通過實驗室試驗和工業(yè)性試制，對用電廠濕排煤渣替代砂配制的混凝土小型空心砌塊進行了研究。 返回 sand cinder concrete