短語詞組短語iron base braking materials 鐵基摩擦材料base layer materials 底層材質(zhì)cu base frictional materials 銅基摩擦材料resins base pattern materials 樹脂基模料semerigid base course materials 石灰粉煤灰類材料paper base friction materials 紙基摩擦材料coal base functional materials 煤基功能材料base teaching materials 基礎(chǔ)教材cement base composite materials 水泥基復(fù)合材料 返回 base material