Cyclization occurs readily with dilute alkali.遇到稀碱就容易环化.Menthol was obtained from lemon eucalyptus oil via cyclization and catalytic hydrogenation.以柠檬桉叶油为主要原料经环化、催化氢化二步反应得到薄荷醇.METHODS Cilnidipine was synthesized from cin...
他腹肌发达,体型完美。He has a six-pack stomach and is extremely well-proportioned.整个锻炼过程中,注意要紧绷腹肌。Throughout the exercise, focus on keeping your abs tight.纽曼的腹肌绷紧了。Newman's stomach muscles tensed....