查询词典 electron-optical

At the normal state, porphyrin molecules do not have EPR signal. However, light excitation may cause a transition of porphyrin molecules from singlet to triplet. At the same time, the change from diamagnetism to paramagnetism occurred to porphyrin molecules. In this case, the two un-paired electrons are nearby each other and cause a strong interaction, giving EPR signal with sharp peak at g =2.000. The g value increased with an increase in electron cloud density.

常态下卟啉分子没有EPR信号，在光的激发下，卟啉分子由原来的逆磁性分子变成顺磁性的激发三重态分子，这种激发三重态分子在分子轨道上具有两个未成对电子，这两个电子相距很近，彼此之间发生很强的相互作用而产生电子，它的 g 值随卟啉共轭体系平均电子云密度增大而变大。

They had suppressed the cathodic process of carbon steel electrode. Their inhibition performance was also related with their molecule stereo conformation and electron configuration. Four of bis-(1, 1'-benzotriazoly)-α,β-diamide compounds linked via-CO 〓CO-chain were synthesized and certified by IR and 〓H-NMR. The minimum energy conformations of these compounds were obtained by MM2 forcefield program. The two benzotriazole moiety in BBT1 was more planar than in other compounds. This was beneficial in increasing the inhibition effects of BBT1. In 0.5M H〓SO〓 solution, BBT1 suppressed anodic corrosion reaction. In 3%NaCl solution, BBT1 suppressed both cathodic and anodic corrosion reactions. 1- [ (1'-imidazolly)-methyl] benzotriazole was synthesized by Mannich reaction.

合成了四个通过-CO〓CO-连接的双（1，1'-苯并三唑）-α，ω-二酰胺化合物，采用MM2分子力学程序优化了它们的分子结构，双（1，1'-苯并三唑）-α，ω-二酰胺化合物的缓蚀作用与其分子内两个苯并三唑单元的空间取向有关系，良好的平面性有利于苯并三唑二聚体的吸附和缓蚀作用，苯并三唑二聚体BBT1分子内两个苯并三唑单元近似平行，所以显示出较好的缓蚀效果。0.5M硫酸中BBT1主要抑制铜的阳极溶解的电化学反应；3％NaCl溶液中，BBT1对铜的阳极溶解和氧的阴极还原过程均有抑制作用，相比较而言对阴极过程的抑制作用更大一些。

Since 1990, people began to pay attention to the semiconductor electron field emission, in the beginning,"Diamond Field Emission age." then further expand to the DLC cold cathode material.

自1990年以后，人们开始关注半导体场电子发射，其开始于"金刚石场发射年代"，然后进一步拓展到类金刚石冷阴极材料。

Electrons can be easily injected from thegraphitic matrix into the conduction rand of diamond under the high field which resultedfrom the projection field enhancemext.These injected electrons could reach the vacuumsurface and then emit into vacuum where the negative electron affinity or low electronaffinity could allow the electrons to re emitted more easily.

由于场增强效应，对镶嵌在非晶碳颗粒表面的金刚石晶粒来说，电子在高场作用下通过隧道效应越过金刚石晶粒与非晶碳形成的界面势垒，注入金刚石的导带，在电场的作用下迁移到表面，由于某些金刚石表面具有负电子亲和势或较小的正电子亲和势，电子较易发射进入真空。

A series of azobenzenes with different electron effect substituents were prepared from diazonium salts and benzoguanamine.

将含有不同取代基的芳胺在盐酸介质中进行重氮化反应，制得相应的重氮盐，再与苯代三聚氰胺发生偶合反应，最终得到一系列含有不同取代基的偶氮化合物。

Moist chamber culture method,oat-agar culture method and scanning electron microscopy were used to study the process of the individual development of Didymium iridis.

利用基物培养、燕麦-琼脂培养技术及扫描电镜技术研究了黄柄钙皮菌的个体发育过程，在燕麦琼脂培养基上完成了从孢子到孢子的生活史。

The morphological structure of dynamically vulcanized thermoplastic ethylene propylene diene monomer/polypropylene was investigated with scanning electron microscope.

用扫描电镜研究了三元乙丙橡胶聚/丙烯动态硫化热塑性弹性体相态结构的形成过程，探讨了交联密度、制备工艺、螺杆转速对EPDM/PP TPV相态结构的影响。

The product was characterized by differential thermal analyzer and thermal gravimetry,Fourier transform-infrared spectrum,X-ray diffractionand transmission electron microscope.

运用差热—热重、傅立叶变换红外光谱、X射线衍射、透射电镜对生成LaCoO3的超细粉末进行了表征。

The morphology, composition, diameter, size and size distribution, differential thermal and weight loss of MoS2 particles were measured by X-ray diffraction, transmission electron microscopy equipped with an energy-dispersive X-ray spectrometer, Zetasizer analyzer and differential thermal and thermogravimetric analysis in air.

用X-射线衍射、透射电子显微镜、能谱、粒度分析仪以及差热－热失重分析等分析手段，考察了产物粒子的形貌、成分、尺寸及尺寸分布、差热－热重的情况。

The effects of the dosages of initiators, emulsifier, organicsilicon and 2-Hyciroxypropyl acrylate on conversion and graft efficiency were studied. Moreover, the particle morphology, particle size distribution and glass transition temperature of latex were characterized by Transmission Electron Microscopy, size distribution analyzer and Differential Scanning Calorimetry.

考察了引发剂用量、乳化剂用量、有机硅用量、丙烯酸羟丙酯用量对硅－丙核／壳乳液转化率、接枝率的影响，并借助透射电镜、粒度分布仪和差示扫描量热仪分别对乳胶粒形貌、粒径分布及其玻璃化转变温度进行了表征。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。