A.0.2m B.0.3m C.0.4m D.0.5m
A.4.5m,0.2m B.4.5m,0.3m C.3.9m,0.3m D.3.9m,0.2m
A.增粘劑 B.防水劑 C.速凝劑 D.高效減水劑