查询词典 synthesis

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。

Employment Orientation : This major cultivates competitive engineering technical talents who are well developed morally, intellectually, and physically, are in good command of basic theories of materials synthesis and processing and comprehensive knowledge of process design and electromechanics , and will engage in work with respect to research and development, quality control, and teaching of materials synthesis and processing.

就业方向：本专业培养德、智、体全面发展，掌握材料合成、加工的基本原理以及工艺设计和机电的综合知识，进行材料合成和加工的研究与开发、质量管理和教学工作，并具有竞争能力的工程技术人才。

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。

This paper studied the synthesis and models about the etherification reaction from isoamylene to the tert-amyl methyl ether synthesis.

分析了异戊烯醚化生成甲基叔戊基醚的反应机理及相关的反应动力学模型，以甲醇和乙烯裂解碳五为原料进行醚化反应，分别求得R-E模型、L-H模型的动力学参数。

If this is not specified, then it is defaulted to 25

如果这是没有指定，则默认为25

Cott invited his mother over for dinner.

COTT邀请母亲来他的房子晚餐。