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- Because Eu2+ is surrounded by host ions, mixed states of 4f5d will be split by the crystal field and the luminescent wavelength will be changed. 由于Eu2+被基质离子所包围,基质离子所产生的晶体场使Eu2+离子的4f65d混合能级劈裂,从而改变发光的波长。
- The ESR spectra of BaCl2: Eu powder showed that Eu2+ ion substituting the ion Ba2+ is situated in a crystal field of the orthorhcmbic symmetry. 制备和用X射线分析BaCl_2:Eu微晶的结构,并测量它的电子自旋共振(ESR)谱,结构分析和ESR谱都表明,替代Ba~(2+)的Eu~(2+)离子是处在轴对称的正交晶场中;
- Molecular Orbital Theory and Crystal Field Theory demonstrated the possibility of the complextion reaction between L-Cys and hemoglobin. 运用分子轨道杂化理论和配合物晶体场理论论证了半胱氨酸和血红蛋白之间发生配位反应的可能性。
- Hence it wasfound that the promotion effect of the first transition series ions was qualitalively relat-ed to its crystal field stabilization energy (CFSE). 而且发现,第一过渡金属离子的助催化作用与它的晶体场稳定化能(Crystal Field Stablization Energy,CFSE)有关。
- The crystal field effect of rare-earth ions in crystal, due to the screening effect of 5s2, 5p6 lamella, can only produce very faint perturbation to 4f electrons. 晶体中的稀土离子，由于5s2,5p6壳层的屏蔽作用，晶场作用只对4f电子产生很弱的微扰，因此，它们的光谱和自由离子情况很相似，晶场对能级的影响只在几百个波数范围。
- Due to the change of the crystal field, their orientational orders are distinctly different from those in bulk system, and some unique phenomena appear. 由于外部晶场环境的改变,这两种体系的分子取向序与宏观C60晶体材料有着明显不同,并且出现了一些特殊现象。
- In order to calculate the energy spectra of Cr3+ ions in C3v-symmetry crystal fields, a radial-orbit-function for the d-electrons in bounded ions, which has the form between the SCF wave-functions of Richardson and Watson, was used. 为了计算Cr~(3+)离子在C_(3v)对称晶场中的能谱,本文采用一种形式介于Richardson和Watson SCF波函数之间的束缚态d电子径向轨函;
- This paper discusses the critical behaviors and magnetic properties of the spin-1 bond and crystal field dilution Blume-Emery-Griffiths (BEG) model on simple cubic lattice within the framework of effective field theory (EFT). 本文在有效场理论的框架内，基于简立方晶格讨论了自旋为1的键和晶场稀疏Blume-Emery-Griffiths(BEG)模型的临界行为和磁学性质。
- On the basis of perturbation theory, HMO method is used to calculate d~ configuration stabilization energy (i. e crystal field stable energy, CFSE) which in some cases should be considered in determining molecular structure of coordination compounds. 根据微扰理论,用HMO法计算了各种d~n构型的稳定化能(即晶体场稳定化能,CFSE),这是在若干化合物决定构型时须予考虑的另一因素。
- The EPR spectrum of the Gd( III ) complex exhibits the "U" spectral feature and "zero field effect". On this" basis, the crystal field strength and the local symmetry around Gd3+ in the complex have been discussed. 研究了Gd配合物的EPR谱;呈“U”谱特征;并出现“零场效应”;据此讨论了配合物中晶体场强度及Gd~(3+)周围的局部对称性.
- An analytical treatment fsr a Strong Crystal field in an Octahedral Symmetry by using the unitary group approach is given. It Shows that the convenience of the Unitary group opproach is comparable with that of the Racah method. 应用酉群方法对强晶体场的八面体对称问题进行解析处理,表明酉群方法和Racah方法同样有效。
- In order not to be late, she cut across the fields. 为了不迟到，她抄近路穿过田野。
- This set of crystal wine cups is very expensive. 这套水晶玻璃酒杯非常昂贵。
- crystal field distortion structure 晶场畸变
- crystal field stabilization energy 晶体场稳定能
- I lost my crystal necklace at the party. 我在晚会上丢失了水晶项链。
- The farmers planted some buckwheat in the fields. 农民们在田里种上荞麦。
- She made her meaning crystal clear. 她把她的意思解释得清清楚楚。
- A few scarecrows were set up in the fields. 田里竖起了几个稻草人。
- Is there a right of way across these fields? 人们有权通过这些田地吗？
