约 4,100,000 个结果
在新选项卡中打开链接
  1. Urea - Wikipedia

  2. Urea | NH2CONH2 | CID 1176 - PubChem

  3. Urea | Definition, Formula, Production, Uses, & Facts ...

  4. Urea Formula - Chemical and Structural Formula of Urea ...

  5. Urea - American Chemical Society

  6. Urea (CH₄N₂O) - Definition, Structure, Preparation ...

  7. Urea - CH4N2O Structure, Properties, and Uses - BYJU'S

  8. Urea Formula, Structure, and Uses - Toppr