查询词典 chemical synthesis

So to synthesis the key chiral building blocks for these single enantiomer chemical products has become one of the most important and hot fields in organic synthesis.

因而合成这些手性产品的关键手性砌块也成了当前合成界研究的热点。

Its commercial technologic processes and products,such as Acetic Acid Production by Carbonylation of Methanol,Formyl Morpholine,Steam Reforming Catalyst,Low Pressure Methanol Synthesis,Dimethyl Formamide Production by Dehydrogenation of Methanol,Dimethyl Ether Synthesis by Methanol Dehydration,Hydrogen Production by Methanol Cracking,Methanol Synthesis Catalyst,PSA Gas Separation Devices, and etc.,have been applied in more than 800 plants over fields including chemical industry,petrochemical,food, metallurgy,machinery,military industry.Many technological products were exported to American,European,Asian countries as well as Hong Kong,Macao and Taiwan.Remarkable economic and social benefits are achieved.

甲醇羰基化合成醋酸，甲酰吗啉，转化催化剂，低压合成甲醇，甲醇脱氢制二甲基甲酰胺，甲醇脱水制二甲醚，甲醇裂解制氢，合成甲醇催化剂，变压吸附制氢等成套工业装置和产品应用于全国800多家化工，石化，食品，冶金，机械，军工等企业，并出口美国，欧州，亚州等国及港，澳，台地区。

Quinic acid is an important fine chemical product and intermediates of drag synthesis, which can be numerously used in drag synthesis, food and the chemical industry, So it has increasing commercial demand.

奎尼酸是一种具有极高价值的精细化工产品和医药中间体，在医药工业、食品工业、化工等行业均有广泛的用途，市场需求很大。

The replacement of toxic and volatile organic solvents as reaction media or an efficient catalyst with environmentally acceptable alternatives are an area of tremendous importance in modern organic synthesis. Basing the review about solid-phase synthesis with simple separation, the liquid phase organic synthesis supported by the solution polyethylene glycol and the chemical reactions in the medium of PEG, herein we are going to study the synthesis of 1-amidoalkyl-2 -naphthols in presence of the solution catalyst or the solid catalyst and the synthesis of thiourea in PEG-400 medium.

难溶性载体试剂参与下的固相合成使分离操作简单易行；可溶性聚乙二醇支载下的液相合成显示出液相反应的稳定高效性，同时兼顾大分子聚合物容易沉降分离的优点；无毒且稳定的小分子PEG作为反应介质，往往表现出醚和醇的双重性质和功能。

Antiseptics , pesticide , raw materials of chemical synthesis

防腐剂农药，化学合成的原料

Pakistan-American biochemists Khorana has spent the beginning of the chemical synthesis of 64 kinds of possible methods of genetic code, and test their activity.

巴基斯坦裔美国生物化学家霍拉纳开始已用化学的方法合成64种可能的遗传密码，并测试它们的活性。

The majority of the toxic organics of greatest concern in water are not naturally occurring but are products of chemical synthesis.

大多数的在水中有重大关系的那些有毒的有机物并不是自然的出现但它是化学物质综合体的产品。

Products are mainly used in organic chemical synthesis, pharmaceuticals, water treatment and other industries.

产品主要用于有机化工合成、医药、水处理等行业。

On the basis of investigation and study of a lot of literature, we find that there are problems in the chemical synthesis field of semiconductors.

通过大量文献调研，发现了在半导体纳米材料的化学合成研究领域中存在的问题。

At present, the methods of mannitol production in industry are mainly extraction from brown algae and chemical synthesis.

目前甘露醇工业化生产主要采用海带提取法和化学合成法，但这两种方法都存在着不足之处。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐