A.30~40mm B.30~50mm C.30~60mm D.30~70mm
A.面層、基層 B.面層、結(jié)合層、基層 C.面層、結(jié)合層、找平層 D.面層、基層、墊層
A.50mm-100mm B.100mm-150mm C.150mm-200mm D.200mm-250mm