用金属锂 - 液氨一步还原法合成γ姜黄烯.实验证实γ姜黄烯极不稳定,室温下极易芳香化转变成α姜黄烯.The synthesis of ν - curcumene was described. The experiment affirmed that ν - curcumene can aromatize to α - curcumene readily at room temperature....
Neural networks are computer systems which mimic the workings of the brain.神经网络是模拟大脑工作方式的计算机系统。Designing silicon chips to mimic human organs sounds fanciful.设计硅芯片模仿人的器官听上去是异想天开。He could mimic anybody.他可以模仿任何人。...
OBJECTIVE : To observe the therapeutic effect of Weixiao mixture on functional dyspepsia.目的: 观察胃消合剂治疗功能性消化不良的疗效.Shop assistant: She has dyspepsia. I think lactasin will be useful.店员: 我想她是消化不良了. 您给她吃些“乳酶生”吧,应该会有效果的.Result...
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.他们不时地听到大卡车的轰鸣声。Now and then they heard the roar of a heavy truck.听到发动机的轰鸣声，杰克猛地抬起了头。Jake's head jerked up at the throb of the engine...