查询词典 algebraic closure

Goal compound synthesis namely: Take the vanillic acid as outset raw material, obtains 4- hydroxyl - 3- anisole methyl formate with the methyl alcohol reflux conditions, then after the etherification, the nitration, the return to original state, the ring closure response obtains 6- methoxy - 7- animal pen oxygen radical kui zuo lin - 4- alkone, then passes through the chlorination, the substitution aniline, to escape responses again and so on animal pen oxygen radical, etherification to obtain the goal compound; The goal compound and the diethylamine had the amine substitution reaction to obtain TM1, namely 4- benzene amino - 6- methoxy - 7- [2- hydroxyl - 3-(N, N- two ethyl aminos) third oxygen radical] kui zuo lin; Through zuo has the etherification with the Austria niter to respond obtains TM2, namely 4- benzene amino - 6- methoxy - 7- [2- hydroxyl - 3-(2- methyl - 5- nitryl imidazole) third oxygen radical] kui zuo lin.

目标化合物的合成即：以香草酸为起始原料，与甲醇回流条件下得到4-羟基-3-甲氧基苯甲酸甲酯，然后经过醚化、硝化、还原、环合反应得到6-甲氧基-7-苄氧基喹唑啉-4-酮，然后再经氯化、取代苯胺、脱苄氧基、醚化等反应得到目标化合物；目标化合物与二乙胺发生胺取代反应得到了TM1，即4-苯氨基-6-甲氧基-7-[2-羟基-3-丙氧基]喹唑啉；通过与奥硝唑发生醚化反应得到TM2，即4-苯氨基-6-甲氧基-7-[2-羟基-3-(2-甲基-5-硝基咪唑)丙氧基]喹唑啉。

Among them are prominent billionaires, including Steven Spielberg; the owner of the New York Mets baseball team; Carl Shapiro, a nonagenarian clothing magnate who may have lost $545m; thousands of wealthy retirees; and a cluster of mostly Jewish charities, some of which face closure.

其中有著名的亿万富翁，包括Steven Spielberg；棒球队New York Mets的拥有者；Carl Shapiro，一个90多岁的服装业大亨，他可能已经损失了5.45亿美元；数以千记的富有的退休人员；和数量众多的犹太慈善团体，其中的一些可能因此面临倒闭。

Olio 在 2003/09/24 11:00:44 发表的内容: Only the left side of the back pocket when wearing has a button closure.

是不是：只有后袋左边有一个带钮扣的袋盖？过日子就是问题叠了问题，你能做的就是迎接这些问题。

In one way, it was unfortunate and another I think it gives a closure for the family.

一方面，这件事情很不幸。但另一方面，我想对他的家人来说也最终能够放下来。

Full moons bring situations in the extreme one way or another, and they tend to bring closure.

无论如何，满月会会带来极端的情况，而且他们会趋向带来结束。

However, this feature is also a big problem: it will automatically restart the power supply before the closure of the hard disk, restart the machine and then open the hard disk when the power!

不过，这个功能也有一个很大的问题：它会在自动重新启动前关闭硬盘电源，在重新启动机器的时候再打开硬盘电源！

For the fault to be found in large and medium repair plan accordingly, in time, particularly after the closure of the valve can not open pipe explosion, like a repair as an emergency treatment.

对于发现的故障应提出相应的大中修计划，及时处理，特别关闭后无法开启的阀门应像抢修爆管一样进行紧急处理。

Marsupials parenting bag in different ways: Opossum tight closure pocket child-care kits, easy to take Tsai swimming; bag wolf parenting bag open back pocket; bag mole of parental bags divided into two, each with a papilla; most common is the kangaroo's parenting bag, pocket forward to open.

有袋类的育儿袋各有不同：负鼠育儿袋的袋口紧缩关闭，便于带仔游泳；袋狼育儿袋的袋口向后开；袋鼹的育儿袋分隔为两个，每个具一个乳头；最普通的是袋鼠的育儿袋，袋口向前开。

This beautiful Oriana bead bracelet features a box chain and toggle closure.

这个美丽的奥里亚纳珠手鍊具有框链和切换关闭。

The event, which occurred in the tectonic setting of compression from north to south, was closely related to the closure of the Mongolia-Okhotsk sea basin and collision orogeny of the Mongolia-Okhotsk belt to the north of this area.

这一事件是在自北向南的挤压构造背景下产生的，与北部的蒙古—鄂霍茨克海盆关闭和碰撞造山活动有着密切的联系。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48