The infra - red spectra of quinones present a number of interesting features.醌类的红外光谱具有一些有趣的性质.Ethylene and trans - dichloroethylene are both inactive in the infra - red in this region.乙烯和反式二氯乙烯在红外光谱的这个区域都无活性.Infra - red ...
He was aware of the stink of stale beer on his breath.他知道自己嘴里有股变味啤酒的馊味。The tabloid press kicked up a stink about his seven-day visit.小报的报道引起民众对他为期7天的访问的强烈不满。I think their methods stink.我认为他们的方法糟透了。...