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...
Application of samarium diiodide in mediating intramolecular cyclization reactions was reviewed.综述了二碘化钐在分子内环化反应中的应用.Sodium ethylate was used as catalyst in Baker - Venkataraman of cyclization, and all factors were studie...
The rod bent double, the reel shrieked and ratcheted.操作杆进一步弯曲，线轴发出刺耳的吱吱声。a reel on a fishing rod钓鱼竿上的绕线轮Baker's rod is splintered , and Mond's reel is out of fix.贝德的钓竿已经裂了, 而蒙德的绕线已经损坏了....
断交3年后, 两国又重建外交关系.Three years after severing diplomatic relations, the two countries re - established their ties.两人多年前就已断交了.The two friends fell out years ago.我们大吵了一架, 从此就断交了.We quarreled violently , and after that parted...
萨拉抬起手来开始用手指缠绕一缕头发。Sarah lifted her hand and started twirling a strand of hair.他用手指摸了摸伤口，想要确定受伤的程度。He explored the wound with his finger, trying to establish its extent.他手指哆嗦着从口袋里取出相机.With trembling fingers, he removed th...