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trace element
Word forms: plural trace elements
1 N-COUNT (生物体生长所需的)微量元素 A trace element is a chemical element such as iron or zinc that occurs in very small amounts in living things and is necessary for normal growth and development. (生物体生长所需的)微量元素
2 N-COUNT (金属或其他物质中的)痕量元素,微量元素 A trace element is a very small amount of a chemical element that is found in a metal or other substance. (金属或其他物质中的)痕量元素,微量元素
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See also: trace element

trace element
Chemical elements:actinium, alkali metal, americium...

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