abrasive powder or grain,on a base of materials other than woven textile fabric,paper or paperboard,whether or not cut to shape,sewn or otherwise made up

〔建〕天然或人造研磨料粉或粒,以除织物、纸或纸板外的材料为底板,不论是否剪裁成形、是否缝合或经其他方式制作 ......(本文共 53 字)     [阅读本文]>>



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