chemical elements

英 美
  • 化学元素
  • chemical adj.化学的n.药品;化学物
  • elements n.要素,元素;基本原则;恶劣天气element的复数形式
名词 chemical element:
  1. any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter