英语词汇“trace elements”的翻译、意思、用法、释义-英汉经管词典

单词	trace elements
释义	trace elements Definition Chromium, cobalt, copper, iron, manganese, magnesium, molybdenum, selenium, zinc, and other elements that occur in very small amounts (usually less than 1 to 10 parts per million) as constituents of living organisms, and are necessary for their growth, development, and health. Whereas the shortage of trace elements in the body may result in stunted growth or even death, their presence in higher amounts is also harmful. Also called trace metals. Use 'trace elements' in a Sentence You must not allow even trace elements of a toxic substance to seep out into the environment because that can do major damage. Sea water has been found to contain a number of rare and often valuable trace elements, such as gold and silver. I was taught about trace elements in chemistry class, which kind of bored me because I was not into them.
随便看	self catering self check self-defense self-determination self-efficacy self-employed Self Employed Contributions Act Tax (SECA Tax) self employment income self-employment loss self-employment profit self-evaluation self executing self-financing self-fulfilling prophecy self funded plan self-funding self generation self-help project self-incrimination self inflicted injury self insurance self-insured retention (SIR) self-interest self-liquidating self liquidating asset

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trace elements