... 纯度分析 purity check 色纯度 purity of color 纯度检查 purity test ...
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... purity 纯度；纯净 purity check 纯度检验 purity coefficient 纯度 ...
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Check on purity 纯度检查
·2,447,543篇论文数据，部分数据来源于NoteExpress
The company of grocers, for instance, deployed "garblers" to sift through batches of imported spices, to check their purity (hence the modern meaning of the word garbled).
BBC: Lessons from history: Can royalty guarantee a free press?
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