A process for preparation of high purity sec-octyl alcohol from low purity product by catalytic hydrogenation is introduced.
介绍了由低纯度仲辛醇催化加氢制备高纯度仲辛醇的工艺。
There are some problems in traditional separation process for toluene diamine, such as low purity of product and huge energy expenditure.
传统的甲苯二胺分离工艺存在一些缺点，如甲苯二胺产品的纯度不高、过程的能耗大等。
The low purity of furnace charge and accessories and the improper smelting and pouring crafts were regarded as the formation reason of the oxide film.
同时，分析认为这种氧化膜的形成与金属炉料、铸造辅料的洁净度不够以及熔炼、浇注不合理有关。
To meet the demand for high purity TEA in domestic market, 99% high purity triethanolamine (TEA) was prepared by a route using low purity TEA as raw material.
为满足国内市场对高纯度三乙醇胺的需求，采用以低纯度三乙醇胺为原料的生产路线，获得含量99％的高纯度三乙醇胺。
A study was done on the problems such as the relatively low yield, low purity and dark color of the corn-gluten foaming powder produced by means of hydrolyzing corn gluten with alkali.
在用碱水解玉米麸质粉生产玉米蛋白发泡粉的基础上，就玉米蛋白发泡粉得率低，纯度低，色泽深等问题进行了研究。
Mature leaves contain more initial metabolites, such as phenols, polysaccharides, lipids and other substances, and the DNA contained in a relatively small, so it is difficult to extract a low purity.
成熟叶片中含有较多的初次生代谢产物如酚类、多糖类、脂类等物质，而且所含DNA相对较少，所以提取难度大，纯度低。
Quartz Wool was made from high-purity quartz, extremely low in metallic oxide impurities.
试映羊毛采用高纯石英制成，非常适用于进样口衬管。
This circuit provides high purity sine-wave output down to low frequencies with minimum circuit complexity.
这个电路以最简洁的结构实现了高纯净度正弦波输出，而且在较低的频率上也是如此。
This process has the following advantages compared with LiCl melt electrolysis process: low cost, high lithium purity, without environment pollution.
本法与氯化锂熔体电解制取锂的工艺相比，具有产品成本低、纯度高、环境状况好的优点。
Variations of the process enable production of high purity hydrogen, methanol, ammonia, methane or low heating value gas.
此过程的演变工艺可以生产高纯度氢气、甲醇、氨、甲烷或低热值气体。
Features: low alkali, low sodium, high purity.
特点：低碱、低硫酸钠、高纯度。
High purity light liquid paraffin and low condensing point kerosene are produced by urea complex using Zhongyuan crude oil distilling cut as raw materials.
以中原原油直馏馏分为原料，用尿素络合法制得纯度较高的轻液体石蜡和低凝点煤油。
For the low productivity and degree of purity of lycopene in China, the article analyze the stabilization, production, purification, separation of isomer and anaysis of lycopene.
该文针对番茄红素生产过程中产品产率低、纯度差的现状，对番茄红素的稳定性、生产方法、纯化方法、异构体的分离以及检测进行阐述。
High purity heavy liquid paraffin and low condensing point dewaxing oil are produced by urea complex using Daqing crude oil distilling cut as raw materials.
以大庆直馏柴油为原料，经异丙醇尿素脱蜡制得纯度较高的重质液体石蜡和低凝点脱蜡油。
Powder produced in this way has a uniform particle size distribution, low oxide content and high purity.
这种方法制造出来的焊锡粉具统一的粒径、氧化和高纯度的特性。
This paper emphasizes the development, quality and application of corundum castable refractories of high purity, low cement-content.
本文着重叙述高纯度、低水泥、刚玉质耐火浇注料的研制过程、性能以及在我国冶金工业的使用情况。
The high purity manganese carbonate is prepared by the process of leaching, removing impurities and crystallizing from Guangxi's low grade manganese ore.
采用广西某地低品位碳酸锰矿为原料，以硫酸浸出、浸出液除杂、碳化结晶工艺制备得到高纯碳酸锰产品。
The combination of materials self-damps to give the revised drive unit a solid, low-resonance base to work from. A new high-purity copper cable completes the engineering content.
这种复合材质的运用给予耳机单元一个结实而低谐振的“底盘”。耳机线采用新的高纯度铜制造。
The features of the method are labor intensity low, operating easily, the recovery of silver and purity of product silver high.
新方法操作简单，劳动强度低，银回收率高，产品纯度高。
This method have such advantages as its short cycle length, high purity of the products, low energy consumption and little wastes. it is really a new method easy to form a productive capacity.
此方法反应周期短、产品纯度高、耗能低、三废少，是一个很易形成生产能力的新方法。
It was found that low hydrogen purity and high moisture content of the hydrogen used for deoxidation was the main cause.
对扬子石化有限公司连续重整装置催化剂还原过程进行分析，认为存在的主要问题是还原气中水含量高和氢纯度偏低。
The method has the advantages of low product cost and energy consumption, zero emission, less impurities, high recovery rate and purity and the like, and is better in economic benefits.
本发明具有产品成本低、能耗小、零排放、杂质少、回收率高、纯度高等优点，有较好的经济效益。
The process so presented achieves merits of product with high purity and low cost in raw material.
采用环合法合成吡虫啉具有产品纯度高、原料成本低等优点，是吡虫啉生产的最佳工艺路线。
These papers exhibit very low thermal conductivity and are designed for use in applications where purity, cracking resistance, high strength and resistance to heat are paramount.
这种纸导热系数低，专门设计应用于对纯度要求高，抗开裂、高强度和抗热的应用场合。
The method has some characteristics: simple technology, convenient operation, high yield and purity, low production cost.
本法具有工艺简单、操作方便、产品收率高、纯度高、生产成本低等特点。
The method of production of high purity hydrogen by low temperature adsorption is ripe in China.
采用低温吸附法生产高纯氢，在国内已是很成熟的方法。
Germanium window with low absorption will be obtained through controlling donor concentration and doping isoelectronic im purity.
控制施主浓度和掺杂等电子杂质，可以获得低吸收锗窗。
This method has the advantages of high separation efficiency, low pressure drop, high operating elasticity and high yield, and can obtain high purity of 97% citral.
此方法分离效率高，压降小，操作弹性大，收率高，能直接获得97％的高纯度柠檬醛。
The atmosphere at high oxygen partial side of the membranes is air or oxygen, but high purity helium at low oxygen partial side.
膜的高氧分压侧分别是空气或氧气，低氧分压侧是高纯氦气。
The atmosphere at high oxygen partial side of the membranes is air or oxygen, but high purity helium at low oxygen partial side.
膜的高氧分压侧分别是空气或氧气，低氧分压侧是高纯氦气。
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