英语词汇“platinum black”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	platinum black
释义	WordReference Random House Unabridged Dictionary of American English © 2024 plat′inum black′, [Chem.] Chemistrya black powder consisting of very finely divided metallic platinum, used as a catalyst, esp. in organic synthesis. 1850–55 Collins Concise English Dictionary © HarperCollins Publishers:: platinum black n a black powder consisting of very finely divided platinum metal. It is used as a catalyst, esp in hydrogenation reactions
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