不能合成的

Design and synthesis of chiral phosphorus ligands and the applications of them in catalytic asymmetric reactions has been a hot topic. Researchers betake themselves to develop novel chiral phosphorus ligands to solve problems that the existing ones cannot do.

中文摘要手性膦配体的设计与合成及其在不对称催化中的应用一直是研究的热点领域，研究人员一直致力于开发新型的手性膦配体来解决已有配体不能解决的问题。

It is widely used in medical industry, food industry and fodder industry, and its usage is enlarging.

赖氨酸是人、畜自身不能合成的必需氨基酸之一，被广泛应用于医药工业、食品工业和饲料加工业，而且应用领域仍在不断拓宽，具有很好的市场前景。

Solid acid catalysts have been found to be useful catalyst in a variety of organic reactions. They have many advantages, such as non-toxic, inodorous, non-volatile; non-corrosive, non-pollution, mild reaction conditions, high yields and reactivity, excellent stability and simple work-up procedure, and these are what liquid catalysts cant replace.

固体酸催化剂在有机合成反应中应用广泛，这类催化剂无毒无味，不挥发，不污染环境，不腐蚀设备，容易回收，可重复使用，所催化的反应条件温和，产率和选择性高，后处理简便，且具有独特的催化性能，这些是液体催化剂所不能代替的。

Pantothenic acid(vitamin B5) The precursor of coenzyme A,pantothenic acid is essential for several fundamental reactions in metabolism.

泛酸在新陈代谢的一些基本反应中是必不可少的，它是水溶性的维生素B族的成员之一，由植物和细菌合成，而脊椎动物不能合成泛酸。

It was pointed out that the major difference in all the routes was the adjustment in the synthesis of intermediates: 1 racemization of-intemediate; 2 asymmetric synthesis of-intermediate, 3 the preparation of duloxetine from-intermediate.

指出所有这些路线的主要的区别在于调整了中间体的合成方法：将不能利用的-中间体消旋，手性合成-中间体，-中间体制备盐酸度洛西汀。

Choline chloride is one of B race vitamins and is synthesized by oxirane,hydrochloric acid and trimethylamine.

氯化胆碱由环氧乙烷、盐酸与三甲胺为原料合成，是B族维生素之一，是一种不能替代的饲料添加剂，市场上存在造假掺杂行为，对于各种掺杂行为进行分析识别，并提出鉴别方法

This aminophenol is one kind aminophenol which can't be composed by animal and must be taken in from outside.

必需氨基酸是高等动物自身不能合成，必须从外界直接摄取而被吸收利用的氨基酸。

The red fungus consists of human body- needed amino acid, protein, fat, carbohydrate, vitamin, calcium, phosphorous, kalium, ironshot flavin and other microelement, as well as various amino acid that can not be produced by human bodies.

蛋白质、脂肪、碳水化合物、维生素、钙、磷、钾、铁核黄素、等微量元素，及多种人体内不能合成的氨基酸。

The most important, PsaA/B apoproteins can be synthesized obviously in the dark, which is different with the early report [1] that PsaA/B apoproteins can't be synthesized in the etiolated plants such as pea, barley. This different may come from that the volume and size of the chloroplast is not markedly reduced in dark-grown Y-1 cells and many enzymes involved in photosynthesis are localized on the chloroplast envelope.

同时发现，叶绿体基因编码的PSI核心多肽PsaA/B能够在暗条件下合成，而资料报道[1]高等植物如豌豆、大麦的黄化体中不能合成PsaA/B蛋白，这可能是由于在脱绿的Y-1细胞中叶绿体的量并没有发生明显的减少，且仍具有相对完整的大小和形状，而在叶绿体的被膜上具有许多参与光合作用的酶系统。

The charateristice of this quipment are:fabrication at scene,maintain the freshness and nutrition maximum.Rich in 17 kinds of amino acids,8 essential amino acids human but can not synthesized by ourselves,and more than 11 kinds of vitamins,especially B vitamins that rare in other foods;Besides,brew yellow beer,black beer,green beer,fruit beer,to meet different taste and level of customer.

该设备的特点是：现酿现饮，最大限度的保持了啤酒的天然新鲜度和营养，富含十七种以上的氨基酸，其中含有八种人体必不可少又不能合成的氨基酸，还有十一种以上的维生素，特别是其它食品中少有的B族维生素，并且，酿酒师可以根据客人的不同口味分别配置黄啤、黑啤、绿啤、果啤，以满足不同层次和口味的消费者的需求。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。