电子过渡

Quantum chemical and molecular mechanical methods were employed to study the acylation in the acetylthiocholine hydrolysis catalyzed by acetylcholinesterase.

应用量子化学和分子力学方法研究乙酰胆碱酯酶催化硫代乙酰胆碱水解反应中的乙酰化反应，计算了反应物、过渡态、产物及中间体的几何结构及电子结构。

EIA IS-60 (Electronics Industry Association Interim Standard-60), known as the home automation standard, includes specification of the CEBus.

EIA IS-60（美国电子工业协会过渡标准-60），又称为家庭自动化标准，包括 CEBus 技术规范。

The reaction barrier will be lowered by the substituents that delocalize the unpair electron in p z orbital of the central carbon atom.

R1和R2位置上取代基对α-氢转移反应势垒的影响取决于取代基对过渡态中碳原子的未参与sp2杂化的p z 轨道上单电子的离域作用。

When doping the first periodic transition elements in TiO〓, the relationships between the photocatalytic activities and the ratio of electronic affinity energy to the ionic radius and the ionic magnetic moment of heteratomic ion were studied.

通过第一过渡系元素对纳米TiO〓光催化剂的掺杂，发现催化活性与掺杂元素的稳定氧化态的电子亲和势Ea与离子半径r的比值Ea/r有顺应关系，该比值越大，催化活性越低。

A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; and a mixture of two or more different selectivity control agents, said SCA mixture comprising from 1 to 99 percent of one or more esters of one or more aromatic monocarboxylic acids or substituted derivatives thereof, and from 99 to 1 percent of one or more alkoxysilane compounds.

一种用于丙烯聚合的催化剂组合物，包括：一种或多种齐格勒-纳塔主催化剂组合物，该齐格勒-纳塔主催化剂组合物包括一种或多种过渡金属化合物和一种或多种芳族二羧酸酯内部电子给体；一种或多种包含铝的辅催化剂；和两种或更多种不同的选择性控制剂的混合物，所述SCA混合物包括1到99％的一种或多种芳族单羧酸的一种或多种酯或其取代衍生物、和99到1％的一种或多种烷氧基硅烷化合物。

The surroundings of the central ions were simply forecast in accordance with the electronic spectrum and the scale of nonfreedom. copper-amino acid compound, electronic structure, radial scaling theory,spectrum interpretations

通过我们的系列工作找出一定的规律，则对金属酶的活性中心的结构、电子结构具有清晰的认识。2理论介绍配位场理论是研究过渡金属络合物的一种重要的理论方法，在理论研究

Transition metal Pyrazolyl ligands have attracted considerable attention as in catalysis, magnetic coupling, biological mimicry, electron transfer, optic-physics area because of pyrazolyl ligands have luxuriant self-assembly chemistry and as a kind of multifunctional organic ligand.

吡唑类配体是一种较复杂的多功能有机配体，有着丰富的自组装化学，使其形成的过渡金属配合物在催化、生物仿生、磁学耦合、电子转移和光物理性质等方面具有潜在的应用价值，近年来受到广泛的关注。

Randell Mills is the pioneer of technology based on energy released as the electrons of hydrogen atoms are induced by a catalyst to transition to lower-energy levels (ie drop to lower base orbits around each atom's nucleus) corresponding to fractional quantum numbers.

米尔斯博士兰德尔是基于技术的先驱，作为电子的氢原子释放的能量是由催化剂作用过渡到低能量水平（即降至大约每个原子的原子核基准较低轨道）相应的分数量子数。

Some important questions are discussed, such as, the common characteristics and distinctions of the surface ripples on the (001) surfaces of the carbides, the effects of the surface ripple on the surface energy and the surficial charge distribution, the change trends of the cohesive energy and surface energy of the carbides and their surfaces, an...

讨论了不同碳化物表面褶皱的共同特征和相互差别、碳化物表面褶皱的产生对表面电子分布情况和表面能的影响、碳化物的结合能和表面能的变化趋势、以及表面能与结合能之间的关系。提出了块体结合能和表面褶皱程度两种因素共同影响和决定IVB和VB过渡族金属碳化物(001)表面能的观点。

The electronic and magnetic structures of transition metal ferrites have been of interest for more than a decade.

中文摘要过渡金属陶铁磁体的电子结构与磁性的特性，在过去的数十年间，无论在工业以及学术研究上，都受到相当广泛的应用与重视。

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