单词 | praseodymium |
释义 | praseodymium n. Chem. a soft silvery metallic element of the lanthanide series, occurring naturally in various minerals and used in catalyst mixtures. Usage Symb.: Pr. Etymology: G Praseodym f. Gk prasios (see PRASE) from its green salts, + G Didym DIDYMIUM |
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