跃迁

The results suggest that the electronic π-π* transitions in AlQ_3 are localized on the quinolate ligands; the transition from a phenoxide donor to a pyridyl acceptor includes C→C and O→N transferences. There hardly is any relation to the metal aluminum.

结果表明，电子从基态跃迁到低激发态时主要为π-π*跃迁；电荷从含氧的苯酚环转移至含氮的吡啶环上，包括两环之间 C→ C转移和 O→ N转移，与金属离子关系不大。

In the incidental light, the transition matrix element, transition probability and frequency, the selection rule, the energy level structure are discussed step by step.

讨论了光场作用下，量子点中电子的跃迁几率、跃迁频率、选择定则和能级结构，并给出了吸收系数α的解析表达式和相应的吸收曲线。

Effects of proton number, doping degree and so on were discussed by means of a new model.

有实验资料表明质子在膜中的大多数输送是链段运动和质子跃迁双重作用的结果，利用模拟参数本文将输送的质子数表征为链段运动和质子跃迁两项和的形式。

To quantificationally describe trip mode transfer rules,the comparability between trip mode transfer and quantum jump was analyzed in detail,and a trip mode transfer model was put forward according to quantum energy level jump theory.

为定量描述出行方式转移规律，分析了出行方式转移与量子跃迁的相似特性，根据量子能级跃迁理论建立了出行方式转移模型，通过分析长春市居民出行调查数据，推导了出行方式转移的多项式拟合公式，分别采用2~4次多项式标定了拟合系数，并且进行了相关性检验。

Third, we constructed transition and relieving threshold functions and logic consequence process, then built the alarm level transition-relieving model which is based on Effectual-time.

最后构建跃迁、解除阈值函数和逻辑推理过程，给出"见效时间"预警等级跃迁与解除的模型。

Some technical obstacles, such as the dissolve of yttrium oxide, agglomeration and separated precipitation are overcome.

Ce的引入直接导致了新的电子跃迁的出现，而Ce3+-Fe3+电荷转移跃迁是造成Ce：YIG光吸收急剧增大的主要原因。

He electronic excitation energies of M2X4(PMe3)4 have been studied employing the time-dependent density functional theory. The effects of metal atoms, haloid ligands, and relativistic effect on these compounds were examined.

DDFT方法对M2X4(PMe3)4δ→δ和π→δ跃迁能量的计算较为准确，对π→δ跃迁能量的计算误差较大。

The experimental result shows that the resonance line w,the magnetic quadrupole M2 line,the intercombination line y and the forbidden line z of He-like Al are obtained with PET crystal in the direction of horizontal.

实验结果表明，PET晶体分光效果理想，获得了铝的类He共振线、磁四级M2跃迁x线、互组合跃迁y线以及禁戒谱线z线，适合于研究X射线极化光谱学；云母晶体得到铝的类He共振线，其伴线光谱不明显。

In the second part of this work, a computor program is developed to calcalate〓L〓energy levels, reduced matrix elements, crystal field energy levels, oscillator strengths of f-f transition and theoretical f-f absorption spectra of f-ions. The calculation results of the f-f absorption spectra of Nd in water coordination sphere and H di (2-ethylhexyl phosphinic acid coordination sphere with different symmetric structure are shown and compared with observed spectra.

在第二部分中，编制了计算f离子的〓L，能级、约化矩阵元、晶体场中Stark能级分裂、f-f跃迁振子强度及f-f理论吸收光谱的计算机程序，以此程序分别计算了Nd在不同结构对称的水配位层及烷基磷酸配位层中的f-f吸收光谱，通过与实验谱比较，识别了可能的配位层结构，并讨论了f-f跃迁的强度机理。

In this dissertation,we study the interband and intersubband transitions inGaAs/AlGaAs step multiple quantum wellstructures by nonlinear opti-cal methods.

在本论文中，我们以GaAs/AlGaAs阶梯量子阱结构为研究对象，用非线性光学的方法研究了其带间跃迁和子带间跃迁的部分性质。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。