Basic meaning:
Fur: fū, radical:? Mouth.
1, furan: organic compound, colorless liquid, used in pharmacy and also an important chemical raw material.
2. Different fonts: Yi, that is, the ancient word "Yi". Furan ring contains four carbon atoms and one oxygen atom, which is a flammable liquid compound fumaric acid, also known as fumaric acid, fumaric acid or lichenic acid, that is, fumaric acid is a colorless and flammable crystal, and the carboxylic acid derived from butene comes from some ancient books of pine oil.