微量元素

wēiliàngyuánsù
trace element (chemistry)

CEDICT

chemistry

Entry Composition

1 微量 wēiliàng
  1. a smidgen
  2. minute
  3. micro-
  4. trace (element)
2 元素 yuánsù
  1. element (key component of sth)
  2. (chemistry) element
  3. (math.) element (member of a set)