abrasive powder or grain,on a base of paper or paperboard only,whether or not cut to shape,sewn or otherwise made up

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〔建〕研磨料粉或粒,僅以紙或紙板為底板,不論是否剪裁成形,或縫合或經(jīng)其他方式制作 ......(本文共 40 字 )     [閱讀本文] >>


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