查询词典 synthesis method

Electrolytic synthesis of calcium iodate was studied,and this method could avoid the disadvantage of chemical method.

采用电化学氧化法制备碘酸钙可以克服化学氧化法存在的问题。

Corrosion action slope cable used in cable-stayed bridge in different corrosion medium such as synthesis sea water, solution NaCl and simulation acid rain are studied by electrochemical method, for example, linear polarization, Tafel extrapolation and AC impedance method.

对此，本论文以人造海水、NaCl溶液、模拟酸雨作为腐蚀介质，针对不同类型的钢绞线，采用线性极化法、Tafel外推法和交流阻抗法等电化学方法研究斜拉桥拉索结构中钢绞线在不同介质中的腐蚀行为。

Low-valent titanium reagent induced the monomolecular reduction of N-substitutedphthalimides supplied a new method of synthesis hydroxyl lactams. This method was moreeconomic, convenient and in higher yields comparing with other methods reported before,therefore it has practical value.

4低价钛试剂引起邻苯二甲酰亚胺的单分子还原反应提供了一种合成羟基内酰胺的新方法，和文献方法相比，我们的方法试剂便宜易得，毋需溶剂，操作简便，收率也有所提高，具有实用价值。

Subjective A/B listening test indicates that the reconstructed speech's quality of this method is better than that of fixed phase with 4-6 bit. Compared with the dispersion phase vector quantization method, the synthesis speech is slightly improved for female speakers.

主观A/B测试结果显示，该方法与固定相位法相比，经4~6 bit的相位量化可使合成语音质量得到显著的改善，相比散布相位矢量量化方法，女声的语音合成质量有所改进。

A new method that transforms bitlevel waveform polynomial to word-level polynomial model is given, allowing for simple composition This method offers an efficient way to determine whether two descriptions from different design levels are equivalent, so component reuse, synthesis and verification across design levels can be realized. In addition, an experimental system using C language is established, including modules such as representation of waveform polynomial, decision of path senstization, delay computing, clocking based on single-period sensitization, clocking based on multi-period sensitization, test generation considering noise and transformation from bit-level waveform polynomial to word-level polynomial model. They respectively used to test models and techniques proposed in this paper.

另外，基于C语言本人设计开发了一个实验软件系统，该系统包括波形多项式表示模块、敏化通路判定模块、延时计算模块、单周期敏化的最小时钟周期精确确定模块、多周期敏化的最小时钟周期确定方法模块、考虑噪声的测试生成模块和位级波形多项式描述转化成字级多项式描述模块，分别用于对本文各章中提出的自动化设计的模型和方法进行实验验证。

To counter the problems present in the CO 2 removal with PC method in the little scale ammonia synthesis plant at present, the effect of CO 2 removal plant with carbonic propenyl ester method on the different factors of normal production has been analysed in detail.

针对目前小合成氨厂碳丙脱碳存在的问题，详细分析了影响碳丙脱碳装置正常生产的因素，总结了 90年代以来人们在解决生产实践中诸多问题的经验和方法，对碳丙脱碳工艺作了总结与评述。

It is necessary to find a new method for garbage disposal. Compared to existent methods, landfill method of garbage block has its characters, which includes classification throwing, collection and predispose of garbage that make garbage disposal classification; use of reclaimable street collection that make garbage disposal resource; shatter,dehydration and press packing of garbage street collection that make garbage disposal decrease; disinfection and classification stack that attribute to classification administer and supervise of garbage field and make garbage disposal harmlessness; recycle, compost, burning and landfill that make garbage disposal synthesis; exploitation and use of garbage field that make garbage disposal environmental protection.

与已有的垃圾处理方法比较，垃圾块体填埋法有自己的特点，以社区为单元的垃圾源头分类投放、收集和预处理，能使垃圾实现分类化处理；通过垃圾中可回收废物的回收利用，能使垃圾最大限度资源化；通过垃圾分类粉碎、脱水、压缩成块体，使垃圾有效地减量化；经过消毒、分类堆砌有助于垃圾填埋场地的分类管理和安全监控，使垃圾处理基本无害化；回收、堆肥、焚烧、填埋，使垃圾处理综合化；填埋场的复垦与开发利用，使垃圾处理环保化。

Nowadays, the making of urban policy and plan emphasize more on synthesis, dynamicality, spatiality and operationality of research method for Urban System, but the traditional method can not meet this kind need.

它不同于以前的城市动力学研究，它更加注重城市问题的空间性，城市政策及城市规划的空间效应是其主要的应用目标。

Separation of them and synthesis, biological activities of their derivatives are of great signfication in development of advanced-processed products of resin.In this paper, Abietic acid with 90.9% and 97.5% purity were obtained using A amine salt method and B amine salt method for the first time.

本文提出两种提纯高纯度枞酸的新方法，即A胺盐法和B胺盐法，A胺和B胺均为自制品，通过A胺盐法和B胺盐法可分别得到纯度为90.9%和97.5%的高纯度枞酸，成本仅为文献报道常用的二戊胺盐法成本的1/5和1/3。

Chemiluminescent immunoassay is one of the advanced immunoassay ofnon-radioisotopic immunoassay because of its high sensitivity, wide dynamic range,high accuracy, stable labeled protein, full automation and extensive application field.CLIA using acridinium ester derivatives as chemiluminescent label has advantages oflow background, high signal-to-noise ratio, no need of catalyst and simpleluminescence system. Different aspects associating the DMAE·NHS-based CLIA were studied in thisthesis, including synthesis of acridinium ester, chemiluminescentcharacteristics of DMAE·NHS, labelling antibody or streptavidin with DMAE·NHS,two-site sandwich chemiluminescent immunoassay for TSH, two-sitesandwich chemiluminescent immunoassay involved biotin-streptavidinsystem for TSH, and competitive chemiluminescent immunoassay usingbiotin-streptavidin system for TT〓. The desired acridinium ester, DMAE·NHS, was synthesized according to thereference method with some modifications. The products were identified by IR, NMR,MS and elemental analysis. In our method, KOH was used in place of NaOH tosynthesize benzyl ester of 3,5-dimethyl-4-hydroxybenzoic acid,2',6'-dimethyl-4'-(n-succinimidyloxycarbonyl) phenyl-acridinium-9-carboxylate waspurified on a silica gel column with chloroform/ethylacetate(4:1, v/v) as eluent andfurther purified by triturating with hexane/acetone(2:1, v/v).

DMAE·NHS的合成是本论文的关键和难点，我们对文献方法进行改进：文献方法用氢氧化钠与3，5-二甲基-4-羟基苯甲酸反应制得3，5-二甲基-4-羟基苯甲酸钠，再用3，5-二甲基-4-羟基苯甲酸钠与苄氯作用制备3，5-二甲基-4-羟基苯甲酸苄酯，我们用氢氧化钾代替氢氧化钠，使合成取得成功；在合成2'，6'-二甲基-4'-苯基-吖啶-9-甲酸酯时，文献方法对粗产品进行两次硅胶柱层析纯化，第一次柱层析用氯仿／乙酸乙酯(4∶1，V∶V)作溶剂和淋洗剂，第二次柱层析用己烷／丙酮(2∶1，V∶V)作溶剂和淋洗剂，按照文献方法得到的不是所需要的化合物，我们只进行第一次柱层析纯化，然后用己烷／丙酮(2∶1，V∶V)进行研磨，过滤，洗涤，除去溶于己烷／丙酮(2∶1，V∶V)的部分，得到所需要的产品。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失