基本解释[材料科学]灰底涂布白板纸英汉例句双语例句Duplex Board Grey; white Back;灰底白板纸；词组短语短语COATED DUPLEX BOARD GREY BACK 灰背纸板buy Duplex Board Grey Back 英国买家duplex board with grey 灰背卡纸Duplex board with grey back 灰背咭专业释义材料科学灰底涂布白板纸