levigated abrasive 细磨磨料
levigated alumina 粉状氧化铝磨料
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V to grind into a fine powder or a smooth paste 把...磨成细粉或均匀糊状 [chem]
ADJ having a smooth polished surface; glabrous 有光滑面的; 无毛的 [botany]
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