查询词典 synthesis

Synthesis of crystal comb filter based on lattice structure［J］.

格结构在晶体梳状滤波器设计中的应用［J］。

It is revealed that the crystallinity and crystal size were affected greatly by the synthesis conditions.

研究表明，合成条件对ZSM-5分子筛的结晶度和晶粒尺寸产生明显的影响。

In the present thesis, the synthesis of small crystallite FeZSM-5 was studied and the influence of organic templa...

本论文采用变温两段合成方法，合成了晶粒可控的小晶粒FeZSM-5分子筛，并对其结构等进行了表征。

The non-equilibrium stage model is used to simulate catalyticdistillation process for cumene synthesis using low concentration propylene and benzene.

对苯与低浓度丙烯合成异丙苯的催化精馏过程建立非平衡级模型。

It was found that the MCM-22 zeolite catalyst prepared by the VPT method not only showed good crystallinity and high BET surface area, but also better crystal growth orientation and denser structure.The catalyst showed high activity, selectivity and good stability for alkylation of benzene with propylene, especially better selectivity to the end product cumene.The shaped MCM-22 zeolite catalyst prepared by the VPT method has good prospect of industrial application in synthesis of cumene.

结果表明：汽相法制备的MCM-22分子筛催化剂不仅具有较好的结晶度和较高的微孔表面积，而且具有更好的晶体生长取向性和更加致密的结构；在烷基化反应中也具有很好的活性、选择性和稳定性，特别是对目的产物异丙苯的选择性明显高于水热法合成的催化剂，在异丙苯合成上具有很好的应用前景。

An example of dynamic simulation of a higher order cumulant based speech analysis and synthesis system is realized in SIMULINK by S function.

现在介绍MATLAB和SIMULINK的文章、书籍不少，但几乎都没有深入介绍S函数的设计与实现方法。

An example of dynamic simulation of a higher-order cumulant based speech analysis and synthesis system is realized in SIMULINK by -function.

该系统解码后恢复的语音性能更接近于原始语音，所估计的激励信号更接近于白噪声。

Objective:To study the synthesis,characterization and in vitro antibacterial activity of curcumin derivatives.

目的：研究姜黄素衍生物的合成，表征以及体外抗菌活性。

For the raise synthesis talented person the adaptation new times' request requests to improve the university student overall quality this article through the cut-and-try method the literature material the conversation and the observation methods and so on comparative analysis carries on the examination discovered that the body-building exercises took as an elective the curriculum to have the positive influence to the student overall quality in followed the healthy sports with under the lifelong physical culture principle advanced the university student education for all-around development comprehensively has laid the good foundation for university student's psychological element quality lifelong.

为培养综合型人才，适应新时代的要求，要求提高大学生整体素质，本文通过实验法、文献资料、谈话与观察，比较分析等方法进行考查，发现健美操选修课程对学生综合素质起到了积极的影响，在遵循健康体育与终身体育的原则下，全面推进大学生素质教育，为大学生的终身心理素素质奠定了良好的基础。关键词：健美操，综合素质，大学生

The synthesis of thiourea can be divided into two steps. First, cyanamide was produced by dehydration of urea. Second, cyanamide reacted with Na_2S in water solution, which produce thiourea and NaOH.

首先第一步通过尿素常压脱水制备氰胺，第二步氰胺与硫化钠溶液在一定温度下反应生成硫脲及氢氧化钠，而氢氧化钠与通入的硫化氢气体生成硫化钠，从而继续参与反应。

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