结论化合物~为首次从铁线莲属中分离得到.CONCLUSION Compound ～ are isolated from Clematis genus for the first time.目的研究秦岭铁线莲挥发油化学成分.Objective To study the chemical components of volatile oil from Clematis obscura.如果我的铁线莲得了枯萎病, 我是否能做点什么?If my...
This reaction, called the Hofman elimination, is quite analogous to the dehydrohalogenation of an alkyl halide.这个反应称为Hofman消除反应, 它很像卤代烷的脱卤化氢反应.This paper discussed three methods of producting vinyl etherspreparation from...
He got jab bed in the lower part of his chest.他的下胸部被刺.Be careful! Don't jab his eye out with your bamboo pole.小心! 你的竹竿别捅了他的眼睛.He saw her jab her thumb on a red button — a panic button...他看到她用拇指按了一个红色按钮——紧急呼叫按钮。He ne...
卡车倒车和掉头的时候，我听见发动机的轰鸣声。I heard the engines revving as the lorries backed and turned.他听见从远处什么地方传来打字机的嗒嗒声。From somewhere distant he heard the clatter of a typewriter.然后那个伐木工脱手甩出了斧头。哐！每个人都听见了。Then the woodcutter let his axe ...
水果的美味和它那本质的部分，在装上了车子运往市场去的时候，跟它的鲜丽一起给磨损了，它变成了仅仅是食品。The ambrosial and essential part of the fruit is lost with the bloom which is rubbed off in the market cart , and they become mere provender.雄鸟通常比雌鸟大,颜色更鲜丽.The male bird...