报道以呋喃甲醛和苯乙酮为原料,氢氧化钠为催化剂,采用超声波辐射合成糠叉乙酰苯的方法. With furfural and acetophenone as raw materials - furfurylideneacetophenone was synthesized by NaOH as catalyst under ultrasonic irradiation.
He can do miracles with a few kitchen leftovers.他能用厨房里几样剩饭做出一顿美餐.This tonic will work miracles for your depression.这种补药对治疗你的忧郁症十分有效.Miracles are not generally regarded as magical. Nevertheless, they do partake of the sam...
That was a pretty brainless thing to do.那样做很愚蠢.Brainy students box , will always pick their teachers'brains, but the brainless ones never do that.聪明敏锐的学生会经常向他们的老师详细讨教, 但愚钝的就从来不会做这个.For instance, it appears the ances...