用 4- 氨基安替比林与 3- 甲酰基色酮 、 肉桂醛、茴香醛反应分别合成了3种新的席夫碱化合物.Three novel Schiff bases were synthesized using the reaction of 4 - aminoatipyrine with 3 - formylchromone, cinnamaldehyde and anisaldehyde.从茴香油生产茴香醛的废渣、废液中提取副产品茴香酸,合成茴香酸甲...
The aeroelastic phenomena may be subdivided under the heading static and dynamic.气动弹性现象可以再分为静态和动态两个专题.The aeroelastic phenomena which result may be subdivided under the heading static and dynamic.柔和造成的气动弹性现象可以再分为静态和动态两个专...
阿林是珠宝匠。Allyn was a jeweller by trade.阿林娜看上去惘然若失.Alina was looking totally lost.阿林娜·雷耶斯几年前因她那部不同凡响的小说处女作而迅速成名。Alina Reyes shot to fame a few years ago with her extraordinary first novel....
它的皮,光滑而有银色的晕圈,微微泛出淡青色.Their glossy barks are a faint light green with hazy silver spots.围绕着微管的外周,常有一层仅能着色很浅的晕圈.Microtubules often have a halo around the outside which is only slightly stained.由于被乳状晕圈围绕,凹陷中心显现出亮红色.The cen...