查询词典 ratchet coupling

Our calculations show that the introduction of substituents with various electron effects in various ways may tune the spatial distributions of singly occupied molecular orbitals and the SOMO-SOMO energy splittings, and leads to tunable magnetic coupling properties.

我们的计算表明，通过以不同的方式引入不同电子效应的取代基可以调控两个单占分子轨道的空间分布以及SOMO-SOMO能隙，最终调控双自由基体系的磁耦合性质。

In our group, metalloporphyrins are found as useful phosphorescent probe to investigate biomolecules such as DNA, RNA, protein and so on. The splittings appearing in the excitation spectra indicate the characteristics of exitonic coupling.

近几年该课题组开展了以金属卟啉室温磷光作为探针的分析应用研究，已经发现在生物介质如DNA、RNA、蛋白质等介导下，卟啉室温磷光激发光谱发生分裂，表现出强烈的激子耦合特征。

We studied the formation flight model of the UAVs in the presence of the aerodynamic coupling.

研究了无人机之间存在气动耦合的编队飞行系统模型。

This paper studies the phenomena of intermittent subharmonics and chaos in DC DC converters according to the consideration of coupling filter,consequently concludes that the origin of intermittency comes from conducted or radiated EMI.

文章从电路耦合滤波的角度考虑，分析了一类间歇分谐波与间歇混沌现象产生的原理，确定耦合电路传导和辐射干扰是产生该现象的根源，并构造了一个开关变换器模型作为研究对象，仿真与实验均得到了相似的非线性现象，同时对不同的电路参数集，讨论并分析了其对间歇现象产生所起的不同影响，为变换器的稳定设计提供信息。

Due to conducted or radiated EMI from inner or outer coupling circuits,breathing can exist in current-mode controlled Boost converter.It exhibits as a time-bifurcation undergoing regular period-1,subharmonics and chaos orderly and repeatedly for a long period.

本文揭示了在电流模式控制Boost变换器中，由于存在内部或外部耦合电路引起的传导和辐射干扰，使得有可能产生呼吸现象，这是一种以较长的周期按顺序交替历经规则、分谐波和混沌状态的时间分叉现象，在功率变换电路中是一种非正常的工作状态。

The relationship and mechanism of two kinds of electromechanical coupling effects in ferroelectric ceramics is a noticeable research subject.

铁电陶瓷中两种机电耦合效应的相互关系及机理是一个引人注目的研究课题。

Amino functional silica gel was synthesized by reacting silane coupling agent with silica gel. Then dendrimer-like polyamidoamine on the silica gel surface was prepared using Micheal addition of the amino and methyl acrylate, and ester-exchange of ethylene diamine and the ester group.

用硅烷偶联剂对硅胶表面进行氨基功能化，利用氨基与丙烯酸甲酯发生的Michael加成反应和乙二胺与酯进行的交换反应在硅胶表面合成了聚酰胺－胺树状大分子。

It also gives the equivalent circuit of coupling circuit and the expression of total impedance of equivalent circuit.

给出了耦合回路的等效电路和等效电路的总阻抗表示式。

It also gives the equivalent circuit of coupling circuit and the expression of total impedance of equivalent circuit.

该系统的等效阻抗是分析研究具体电路增益、藕合系数等物理量的关键。本文以

On the basis of the above N-vinylaiton of amides,the Cu-catalyzed intramolecular C-S coupling of thiols was implemented for the first time with CuI (10 mol%) as the catalyst and K_3PO_4·3H_2O2 equiv.

在酰胺氮烯基化研究的基础上，我们进而开展了烷基硫醇分子内烯基化反应研究。

" I' d like to get some rough idea about music in the baroque ear, please."

请简要介绍一下巴罗克时期的音乐，好吗？

The results showed that the peak latency and pattern of SEPs elicited by electrical needling in LI-l1 and MP were similar. The amplitude of SEPs elicited by electrical needling in LI-l1 was higher than that of MP. There was no obvious SEPs generation when MM was electrical needling.

结果显示，电针刺激曲池穴和其邻近桡侧伸腕长肌运动点诱发性脑电波的波形和波峰时间是类似的，只是穴位的诱发性脑电波波幅较大，而电针刺激非穴位点并没有明显的诱发性脑电位。