資料來源 : pyDict

純度檢驗証明,品質証明加蓋純度檢驗証明

資料來源 : WordNet®

hallmark
     n 1: a distinctive characteristic or attribute [syn: {trademark},
           {earmark}, {stylemark}]
     2: a mark on an article of trade to indicate its origin and
        authenticity [syn: {authentication}, {assay-mark}]