“呋喃”造句
2024年07月03日 14:42:04
吡咯, 噻酚和
呋喃的情况就是这样.
Such is the case in pyrrole, thiophene, and furan.
研究结果表明关键步骤为原料 4- 甲基 -2, 3-
呋喃二酮的合成.
It'shows that the key step is the synthesis of 4 - methyl - dihydro - furan - 2 , 3 - dione.
用糠醇和糠醛缩聚制备了新型
呋喃树脂.
A novel furan resin was synthesized by polycondensation between furfuralcohol and furfural.