采用相转移催化剂,氯代环已烷与二硫化钠溶液反应合成了二环已基二 硫醚.Dicyclohexyl disulfide was prepared by reaction of chlorocyclohexane and sodium disulfide using phase transfer catalyst ( PTC ) .确定大蒜素的成分主要包含二烯丙基一硫醚, 二烯丙基二硫醚, 二烯丙基三硫醚等在内的多种含硫化合物.The eff...
Mount Unzen has been spewing out volcanic ash, gas, and rock today.云仙山今天一直在向外喷涌火山灰、气体和火山岩。Mount Marcy is the highest mountain in the Adirondacks.马西山是阿迪朗达克山脉中最高的山。the first ascent of Mount Everest首次攀登珠穆朗玛峰...
莉娜身体很好，还让我转达她对你的爱和祝福。Lina is fine and sends you her love and best wishes.“我也是这样认为的，”埃维莉娜得意地说。"I thought so," Evelina said triumphantly.莉娜怀孕并结婚了。Lena got pregnant and married....