Such is the case in pyrrole, thiophene, and furan.吡咯, 噻酚和呋喃的情况就是这样.It'shows that the key step is the synthesis of 4 - methyl - dihydro - furan - 2 , 3 - dione.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.A novel furan resin w...
It'shows that the key step is the synthesis of 4 - methyl - dihydro - furan - 2 , 3 - dione.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.A novel furan resin was synthesized by polycondensation between furfuralcohol and furfur...
All terrorist crime is detestable, whoever the victims.无论受害者是谁，一切恐怖主义罪行都是可憎的。Selfishness is a detestable quality in anyone.自私是一种可恨的品质.The experience was a detestable ordeal, and it cured him of any ambitions to direct ag...