约 597,000 个结果
在新选项卡中打开链接
  1. Urea - Wikipedia

  2. Urea | Definition, Formula, Production, Uses, & Facts | Britannica

  3. Urea | NH2CONH2 | CID 1176 - PubChem

  4. Urea - Simple English Wikipedia, the free encyclopedia

  5. Urea in Lotion and Cream: Benefits, Side Effects, How to Use It

  6. Urea - American Chemical Society

  7. What Is Urea Made Of? How Is Urea Produced? - Science ABC

  8. Urea - Encyclopedia.com

  9. Urea Test: High & Low Levels + Normal Range - SelfHacked

  10. Urea (CH₄N₂O) - Definition, Structure, Preparation, Properties, …