查询词典 emission spectrum

Comparative study of the properties of both ground and excited states of metal-free indoline dyes for dyesensitized solar cells revealed: as the number of rhodanine rings increases, the energy difference between HOMO and LUMO decreases and there is a red shift in the absorption spectrum with the binding energy increased, and the transition dipole moment decreased; Based on an analysis of cha...

对比研究吲哚染料的基态和激发态性质，揭示了随着绕丹宁环数目的增加，HOMO和LUMO的能量差减少，吸收光谱红移，但是束缚能增加，跃迁偶极矩减少；依据电荷差分密度，电荷和能量从苯乙烯转移到吲哚环和绕丹宁；电子空穴相干性主要表现在吲哚环和绕丹宁环，对于吲哚染料系统，存在一个绕丹宁环的体系的激子数目为30个原子，带有两个绕丹宁环的体系激子数目有40个原子。

The result may be a microquasar that glows across the electromagnetic spectrum and produces powerful jets that expel much of the infalling matter back into the cosmos at near light speed before it can even approach the black hole's event horizon .

结果可能是形成一颗微类星体辐射出整个电磁波谱，产生猛烈的喷气，能够驱逐出大部分落入物质以光速返回宇宙，直至接近黑洞的视界。

And it is shown that the contribution from ingoing wave is equal to the one from outgoing wave in the radiation spectrum chemical potential term caused by the charged rotating particle.

而且在结果中显示，由带电旋转粒子引起的，辐射谱中类似化学势的项，入射波与出射波的贡献是相等的。

The one is assigned to transient absorption of the inhomogeneously broadened ground state absorption spectrum, while the other is the response of the solvent to the change of the electron configuration in the excited state due to solvation dynamics of the polar solvent molecules.

认为一个来源于基态吸收谱的非均匀展宽，而另一个则来源于溶剂对于激发态分子结构变化的响应。

Geographic Information System, an advanced technology, integratescomputer science, informatics, geography and others. It has been widely used innatural resource development, environmental protection, city planning, disastermonitoring and evaluation, etc. Capacity spectrum method is an approach of simplifying the structural dynamicanalysis.

地理信息系统是一门集计算机科学、信息学、地理学等多门科学为一体的新兴学科，由于其能快速、方便管理海量数据的特点，已被广泛应用于资源开发、环境保护、城市规划建设和灾害监测与评估等领域。

The absorption spectrum of the inclusion complex was decreased and shifted toward long waves in the presence of DNA, confirming the intercalative interaction ofβ-CD-TH with DNA.

可见吸收光谱实验的结果是DNA与硫堇包合物之间的嵌插结合作用使包合物的最大可见吸收峰红移、吸光度降低。

In the application of the OFDM system, combined with the adaptive modulation, adaptive coding and the receive diversity based on the accurate estimation of the characteristic of the subchannels, we can increase the spectrum usage, reduce the transmission power, the intercarrier interference and the peak-to-average power rate. So the system performance is optimized.

在OFDM系统的应用中，在对各子信道特性的准确快速估计的基础上，通过对各子载波进行自适应调制，自适应信道编码，以及和接收端的分集接收相结合，能够提高频谱利用率，降低发射功率，抑制子载波间干扰和降低功率峰均比，从而能够使系统的性能达到最优。

Due to the fact that the intercarrier spacing in OFDM is relatively small, OFDM transceivers are somewhat more sensitive to phase noise compared to single carrier transceivers. Thus this problem must be carefully considered in designing an OFDMbased system since an accurate prediction of the tolerable phase noise can allow designer to relax system specifications. According to spectrum theorem, two components of phase noise were analyzed: common phase error and intercarrier interference. On the basis of the analysis, the performance of OFDM was given for the case where phase noise has been added to the signal, and an optimal design criterion for OFDM parameters was proposed that allows to improve the phase noise error correcting capabilities in OFDM receiver.

由于采用子载波间相互正交的结构，OFDM系统对于由本地振荡器不稳定性所导致的相位噪声影响非常敏感，针对公共相位误差CPE和载波间干扰ICI两种影响表现形式不同的干扰项，从功率谱密度函数这一独特角度分析了相位噪声对OFDM系统性能的影响，提出了旨在提高接收机抵抗相位噪声能力的OFDM系统关键参数优化与设计准则，可在对所设计OFDM系统性能加以提高的同时，有效降低对接收机前端模拟振荡器件和相位噪声抑制单元的性能指标要求，从而降低接收机硬件实现成本。

However, the interceptive white noise process must be used for design if the seismic power spectrum concentrates at high frequency band.

但是，如果地震功率谱集中在高频，必须按高频部分截断白噪声设计。

Aiming at the established three-layer infrared radiative transfer model of pollution cloud, the infrared radiative spectra of the pollution clouds at different concentrations were simulated with the field background spectra (that are measured by Fourier transform infrared spectrometer) and every interferent radiative spectrum as the basic radiative data.

当模型考虑干扰物和背景辐射的变化影响时，污染云团在810cm-1，920cm-1和1040cm-1波段上的光谱特征明显减弱。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。