trace element

短语

[医]微量元素

词形变化

trace elements 复数 trace elements

释义与例句

n.
  1. 1.

    A chemical element present in a sample in very small quantities.

    化学
  2. 2.

    A chemical element in an organism’s diet that is required in very small amounts in order to maintain proper biochemical function.

    稀有元素

    微量元素

    化学 生物

词汇关系

名词

上位词 2

element chemical element

词源

Compound of trace (“very small amount”) + element (“chemical element”).

来源：wiktionary