Substituent effect on the thirdpe order optical nonlinear properties and their excited state relaxation processes in porphyrins have been studied.
研究了取代基对卟啉三阶光学非线性和激发态弛豫过程的影响，发现在同一取代位置，推电子基团取代使得卟啉三阶光学非线性极化系数x（3）值相对增加，而吸电子基团取代使得卟啉x（3）值相对减少；对同一取代基在不同取代位置，发现推电子基团在邻位取代的x（3）值大于其在对位取代卟啉的x（3）值。
According to the analysis,we have found transverse relaxation time τ 1 or longitudinal relaxation time τ 2 to characterize relaxation processes respectively and have also given the physics significance about τ 1 or τ 2.
用修正后的漂移理论研究了电子回旋共振现象 ,从回旋共振分析求得了表征弛豫过程的横向和纵向弛像时间τ1和τ2 ,并指出了τ1和τ2 所包含的物理意义 。
Interfacial Momentum Transfer During the Relaxation Process of High Speed Gas-droplet Two-phase Flow;
高速气雾两相流弛豫过程相间动量传递研究
Relaxation of wall and relation to external magnetic filed in optical-magnetic resonance experiment
光磁共振实验中壁弛豫过程与外磁场的关系
EXPERIMENTAL ANALYSIS OF INFLUENCE OF PERMEABILITY SCALE EFFECT ON RELAXATION UNDER LOW FREQUENCY
低频下渗透率尺度效应对弛豫过程影响的实验分析
Effect of electronic relaxation process on air breakdown caused by repetition frequency HPM
电子弛豫过程对重复频率高功率微波大气击穿的影响
The time constants of the slower decays are found to increase with the hydrogen-bonding energy in alcoholic solvents.
实验结果表明慢速弛豫过程的时间常数随醇溶剂分子间氢键键能的增强而增大。
Effects of Structure Relax on Refractive Index during Glass Annealling;
玻璃退火过程中结构弛豫对折射率的影响
Dielectric Relaxation Spectroscopy Study on NaA Zeolite in the Process of Ion Exchange
NaA沸石离子交换过程的介电弛豫谱研究
Investigation of excited triplet absorption spectrum and relaxation kinetics of dimeric chlorophyll a
叶绿素α二聚体激发三重态吸收谱及其弛豫动力学过程的研究
A new relaxation oscillation mode is found through the dynamic simulation.
通过模拟发现了新的弛豫振荡模式。
Vibrational energy relaxation in condensed phases is an important dynamical process in chemistry, physics and biology.
凝聚相中的振动能量弛豫是化学、理学和生物学中一个非常重要的动力学过程。
The larger the structural fluctuation of RFE was, the lower the relaxation degree was in the same frequency condition.
在相同的频率条件下,弛豫铁电体的结构起伏程度越大,弛豫程度越低.
Mechanical and Impedance Relaxations Study in Na_xCo_2O_4
Na_xCo_2O_4陶瓷的力学弛豫和阻抗弛豫研究
Snoek Relaxational Peak in a Fe-Cr-Al Alloy;
Fe-Cr-Al合金中的Snoek弛豫
The nuclei can relax to their normal distribution.
核子可以弛豫到它们正常分布状态。
The relaxation is due to the interactions with the thermal excitations.
弛豫是由热激发相互作用而产生。
Furthermore, they are all dealing with fully relaxed material.
另外，它们都处理完全弛豫的材料。
Study on the Growth and Phase Transition of Relaxor Ferroelectric Single Crystals;
弛豫铁电单晶的生长及其相结构研究
Preparation and Characterization of PST-based Relaxor Ferroelectric Ceramics;
PST基弛豫铁电陶瓷的制备与性能研究