短語(yǔ)詞組短語(yǔ)iron base braking materials 鉄基摩擦材料base layer materials 底層材質(zhì)cu base frictional materials 銅基摩擦材料resins base pattern materials 樹(shù)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 水泥基複郃材料 返回 base material