On a blackboard, he drew five concentric circles.他在黑板上画了5个同心圆。The curvature of the film is concentric with the mirror behind the meniscus.胶片的曲率是和弯月透镜后面的反射镜同心的.The street plan of the city has evolved as a series of concen...
Some animal and plant species cannot accommodate to the rapidly changing cond-itions.某些种类的动植物不能适应迅速变化的环境。There is usually room to accommodate up to 80 visitors.那里通常可以住得下80位来客。The roads are built to accommodate gradual te...
CND funding , and who knew what when, may merit further investigat.CND发现, 他知道什么时候接受更深入的调查.Cmd expatiate the application of new technology cnd new crafts in production practia lity.以及阐述了树脂砂新技术、新工艺在生产实际中的应用.Conclusion: SOD...
正戊醛是合成香料双氢茉莉酮酸甲酯的重要原料.N - amyl aldehyde is a main raw material in the synthesis of methyl dihydrojasmonate fragrance.2-戊基环戊烯酮再与丙二酸二甲酯缩合,脱羧得到二氢茉莉酮酸甲酯.Methyl dihydrojasmonate was synthesized from 2 pentyl 2 cyclopentanone ...