A.V0≥V1≥V B.V≥V1≥V0 C.V1≥V0≥V D.V≥V0≥V1
A.孔隙率 B.空隙率 C.填充率 D.密實(shí)度
A.10%-20%B.20%-30%C.50%-60%D.80%-90%