查询词典 synthesis

The tattle unifies in recent years study on the synthesis of cinnamate of the status quo and application prospect,the use of activated carbon as carrier of phosphotungstic heteropoly acid catalyst for catalytic synthesis of cinnamic acid ester had a preliminary inquiry,and the results were satisfactory.

中文摘要：本文结合近几年合成肉桂酸酯的研究现状及应用前景分析，采用磷钨杂多酸作催化剂活性炭为载体催化合成肉桂酸系列酯进行了初步探究，并且结果令人满意。

In other words, the results novelty broke the conclusion in the pervious reports that combustion synthesis can't occur once Fe content in Fe-Ti-C system is more than 60wt%, and gave more engineering meaning to combustion synthesis of iron-based composites.

而这正是本研究的创新点之一，即打破了前人研究所得出的"Fe-Ti-C体系中Fe含量超过60wt％就不能实现燃烧合成"的界限，从而使Fe-Ti-C体系燃烧合成制各铁基复合材料更具有工程意义。

Synthesis capability and synthesis condition Ectoine (a complemental solute of osmotic pressure) from the SL21 strain were studied.

研究了中度嗜盐菌SL21的渗透压补偿溶质的生成及生成条件。

Direct digital synthesis technology promotes frequency synthesis development quickly, although, it now be restricted by it's connatural spur characteristic.

直接数字频率合成技术推动了频率合成领域的高速发展，但固有的杂散特性极大的限制了其应用发展。

Experiments on purification technologies for the conversion of cornstalk biomass into the industrial product were made to produce cornstalk gas in the down-flow fixed by the gasifier. The experiment focused on the technical procedures for deoxygenation. catalytic cracking of tar, hydrogenation, etc. Quality straw syngas was produced for methanol synthesis. The catalysis of methanol synthesis for the production of cornstalk syngas was earned out in a tubular-flow integral and isothermal reactor under the pressure of 5MPa over Cu-based catalyst C301 (particle size: 0.833mm×0.351mm), a catalyst made in China. Thirty-three sets of test data were obtained.

为了实现秸秆类生物质合成燃料甲醇的工业转化，有效利用生物质能，对下吸式固定床气化炉产生的低热值玉米秸秆燃气进行除氧、分解焦油和配氢等纯化试验，制备出合成甲醇的优质秸秆合成气，在直流流动等温积分反应器中，使用国产C301铜基催化剂，催化剂粒度为20~40目(0.833mm×0.351mm)，在5MPa反应压力下，对玉米秸秆合成气进行催化合成甲醇试验研究，获得33套试验数据。

The description should contain a diagrammatic flow chart of the whole synthesis and a written statement for each step of the synthesis.

有关描述应当包括整个合成过程的流程图以及每一合成步骤的说明）。

Thenew route has some advantages such as simple operation, inexpensive materials andbetter yield compare to other synthesis routes.The synthesis route is showed as follows. First,-2-chloro-3-phenylpropionic acid is synthesized from L-phenylalanine by diazotization.

在参考大量文献的基础上，我们设计了一条新的合成路线，和其它合成路线相比较本路线具有操作简单、原料易得、收率较高等优点。

The article includes three parts. The first, a steroselective and regioselective synthesis of digitoxin with glycosyl ortho-alkynylbenzoates as doners. The second, synthesis of different length chain of L-fucose with a SO3Na group in the position of C-2 hydroxy.

本文工作主要包括三部分内容，分别为采用全新发展的一种邻炔基苯甲酸酯的糖基供体进行地高辛的全合成并与常规的Schimidt供体及三氟亚胺酯供体进行结果比较；合成不同长度的2位硫酸化的岩藻糖糖链；对现有的合成伏格列波糖的一条合成路线进行工艺优化。

In this design, we used the digital direct synthesis method to complete the frequency synthesis.

本设计中，我们采用了数字直接合成的方法来完成频率合成。

It mainly studys approximate engineering synthesis algorithm about effective cross section area of valve, Sa, which synthesis by geometrical cross section areas of restrictor in valve flow channel.

重点研究了由阀流道节流口几何截面积合成阀有效截面积 Sa 的近似工程合成算法。

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