英语词汇“ultratrace element”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	ultratrace element
释义	DictionarySeeelement ultratrace element ultratrace element Any of those elements for which laboratory animals seem to have tiny dietary requirements, typically less than 1 μg/g. Elements in this category include arsenic, boron, bromine, cadmium, chromium, fluorine, lead, lithium, molybdenum, nickel, silicon, tin, and vanadium. See also: element LegalSeeElement
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