2、

Study on reaction bond si_3n_4 ceramics die

反应烧结氮化硅陶瓷模具材料的研究

互联网摘选

3、

Palladium catalyzed cross coupling reaction which is widely used to form C C bond is an important reaction in organic synthesis.

钯催化交叉偶联反应是一类用于碳碳键形成的重要反应,在有机合成中应用十分广泛。

互联网摘选

4、

The flame retardant fundamentals were discussed based on the flame retardant chemical reactions, bond energy, heat transfer and reaction kinetics aspects.

本文从阻燃化学反应、化学键能、热传递和反应动力学角度分析卤素类阻燃剂的阻燃机理。

互联网摘选

5、

Modification of the Hyperbranched Unsaturated Poly ( amide-ester) by the Reaction of Double Bond

不饱和超支化聚(酰胺-酯)中双键的接枝改性

互联网摘选

6、

It can be deduced that the enrichment of starch microspheres to ascorbic acid depends mostly on association reaction of hydrogen bond between hydroxyls and amidos of starch microspheres and hydroxyls of ascorbic acid after contrasting the oxidation features of ascorbic acid when using various electrodes.

通过比较不同工作电极作用下抗坏血酸的氧化特征,可以推论淀粉微球对抗坏血酸的富集作用更多的依赖于微球结构中的-OH、-NH2与抗坏血酸分子中-OH之间的氢键缔合作用。

互联网摘选

7、

At present, the substitution reaction through C-C bond has not been reported yet.

目前,通过C-C键连的取代反应还未见其他报道。

互联网摘选

8、

Breaking Reaction of Ether Bond Catalyzed by Acid

醚键催化断裂的反应

互联网摘选

9、

The FT-IR analysis shows that the two resins occur to cross-linking reaction and hydrogen bond interaction.

通过FT IR分析可知,两种树脂之间发生自交联反应,两者之间存在氢键作用。

互联网摘选

10、

The bond-breaking reaction of CH-3-X bond is studies by using Density functional theory ( DFT).

用密度泛函理论(DFT)研究CH3X的键断裂电子转移反应。

互联网摘选

11、

The chemical bond energy of a molecule is the one of the its thermochemical properties. The bond strength can measure the stability of the molecule. The bond energies can control the rate of many reactions and determine the chemical reaction mechanism.

分子中的化学键能是分子的热化学性质之一,键的强弱可以用来度量分子的化学稳定性的高低,键能值的高低基本上控制了许多反应速度的快慢,也确定了相应化学反应的机理。

互联网摘选

12、

C_ ( 60) is one kind of fullerene with high conjugated cage-types structure. Its covalence between two hexagons has high reactivity, which behaves as addition reaction of double bond.

C(60)是高度共轭的笼状结构的碳素体,分子结构中六边形环间的共价碳碳双键是富电子区,反应性能与烯烃有类似性,主要表现为双键加成。

互联网摘选

13、

Michael Addition Reaction of Thiophenol with Intramolecular Hydrogen Bond in Aqueous Medium

含分子内氢键的苯硫酚在水相中的Michael加成反应

互联网摘选

14、

Calculating the Reaction Activation Energy with Bond Parameter

用键参数计算反应活化能

互联网摘选

15、

Study on the Isomerization Reaction Mechanism of Double Bond Transfer of the Silico-butylene

丁硅烯双键转移异构化反应机理的研究

互联网摘选

16、

Catalytic Action of Palladium Complexes in the Crosscoupling Reaction for Forming C-C Bond

钯配合物在形成碳-碳键偶联反应中的催化作用

互联网摘选

17、

Amination of aldehyde is not only a very important reaction in building C-N bond, but also an efficient method to synthesize many biologically active natural products and pharmaceutical compounds.

醛的胺化反应是构建C-N键的重要反应,也是合成许多具有活性的天然产物和药物分子的有效方法。

互联网摘选

18、

The bond exhibited typical glass phase with low melting temperature and high bending strength of strips ( 53.62-93.34MPa). The microstructure analysis indicated the enhancement of the bonding strength resulted from the chemical reaction between the vitrified bond and microcrystal alumina ceramic.

结合剂为典型玻璃相,熔融温度较低,试样抗折强度为53.62-93.34MPa,微观分析表明两者间发生了化学反应,增强了结合剂对磨粒的把持力,提高了磨具的强度。

互联网摘选

19、

For the studies described in the second chapter, reaction pathways and free energy barriers for the model reaction of the peptide bond synthesis were studied by performing Ab initio calculation.

第二章中我们运用量子化学从头算的方法研究了由肽酰转移酶催化肽键形成的模型反应,并估算了各个反应的自由能垒。

互联网摘选

20、

Reaction-bonding method will be an important method of bonding in thick film paste for AlN substrate.

反应粘结因导热性和热应力等方面的优势,使其成为AlN基板厚膜浆料粘结的重要方式。

互联网摘选

  • 今日热词
  • 热门搜索

英语网英语词典(dict.25820.com)为您提供在线翻译英语词典单词大全英译汉汉译英等英语服务!可按单词字数词义分类查询。支持lj:关键词格式查询例句。

用户反馈
请选择反馈类型(可多选):
您的联系方式:
反馈内容:
提交成功 小编会尽快处理
回到顶部
点击反馈