We studied the optical bistability for four-level system with single and triple state typical of organic media.
对一种有着单重态和三重态的典型的有机物的四能级系统的光学双稳进行了研究。
The rate equation of tunable pulse ti: sapphire laser is given using the theoretical model of four-level system.
以四能级系统为理论模型对脉冲可调谐掺钛蓝宝石激光系统建立了速率方程。
The time characteristics of a pulsed ti: sapphire laser have been studied theoretically based on the rate equation of four-level system.
本文从四能级结构激光速率方程出发，对脉冲掺钛蓝宝石激光器的时间特性进行了理论研究。
In this paper, we use the dressed-atom approach to derive the analytical expression of the gain of a FIR laser with a four-level system.
本文用缀饰原子方法解出四能级系统远红外激光增益系数的解析表达式。
A simplified analytical expression of maximum single frequency output is obtained by the analysis of a homogeneously broadened four-level system;
通过对四能级均匀加宽激光器单频功率的分析得到最大单频输出功率的简化解析结果；
In contrast, AIX is broken down into four main operating system levels: version, release, technology level (TL), and service pack (SP).
相比之下，AIX分为四个主要的操作系统级别：版本、发行版、技术级(TL)和服务包(SP)。
According to isolating level, experimental animal facilities are divide four kinds, and they're isolating system, barrier system, sub barrier system, and open system.
根据隔离等级的不同，实验动物设施可分为隔离系统、屏障系统、亚屏障系统和开放系统四种类型。
A model of the photon avalanche in a four level coupled system is proposed.
提出了四能级耦合系统的光子雪崩上转换模型。
The index system falls into four basic parts: object level, system level, factor level and indicator level.
评价指标体系包括四个基本层次结构：目标层、系统层、因素层和指标层。
In the closed microcavity of an ideal four-level laser system, when nonradiative depopulation is zero, the light output property of the microcavity laser is linearly.
在封闭腔，对理想的四能级激光系统，无辐射衰减速率为零时微腔激光器的光输出特性是线性的。
Beijing and much of industrial northern China are in the midst of a "red alert," the highest level in China's four-tiered pollution warning system.
北京及许多中国北方工业城市目前处于“红色预警”状态，这是中国污染预警系统四个级别中的最高阶。
Compared with three-level atomic system, the atomic coherence effects in four-level can lead to EIT and EIA, which depend on the intensity of control light and the relaxation of the fourth level.
与三能级原子系统相比，四能级原子相干效应即可导致电磁感应透明的产生，也可产生电磁感应吸收现象，取决于控制光的强度和第四个能级衰变率的大小。
The system architecture is separated into four level:resource level, integration level, business level and application level.
该系统在结构上分成四个层次：资源层，集成层，业务层和应用层。
The System consisted of four-level network systems, viz. the Ministry of Railways Administration, subadministration, station and depot level network systems.
工程设计分为铁道部、铁路局、原铁路分局、站段四级网络系统。
During the four weeks training and competition period, the function of T-lymphocytes immune system was a lower level than the normal.
田径优秀运动员在强化训练和比赛过程中，T淋巳细胞功能始终处于较低的状态。
The optimum system architectures is the four-level computer network that centralizes the process of real-time tracing information in the computer centers at the railway bureau.
最佳的系统结构是以铁路局计算中心为实时追踪处理点的四级计算机网络。
Design and make a set of computer time scale experiment system on 82B Lab desk, include four phase time eletronic level and two phase working pulse.
在8 2B型计算机实验台设计制作出一套计算机时标实验系统，包括四相节拍电平及两相工作脉冲，利用此时标系统可组合出计算机所需要的各种时序信。
With the indicator system, the impacts of the four models on the water-level-fluctuating zone are predicted and evaluated.
利用这个评价体系，对三峡库区消落带的四种可能利用保护模式对三峡库区消落带健康状况的影响进行了预测评价。
We have studied the saturation effect of degenerate four-wave mixing in Doppler-broadened two-level system.
我们研究了多普勒增宽的二能级系统中，简并四波混频的饱和效应。
And we can find the deep-seated reasons of Ling Shan's success by analyzing with the four-level model of cultural tourism products, which proves that the evaluation system is reasonable.
运用文化旅游产品的四层次评价模型对灵山文化旅游产品进行剖析可以发现其成功的深层次理由，同时也证明了模型的合理性。
The Kerr nonlinearity of a left-handed material is analyzed in a four-level atomic system.
分析了四能级原子系统中左手材料的克尔非线性特性。
In this paper, the time-resolved degenerate four-wave mixing in two-level system is treated rigorously with the density-matrix method.
本文用密度矩阵方法严格处理了在共振情况下二能级系统时间分辨简并四波混频问题。
Polarization dependence of the enhancement and suppression of four-wave mixing (FWM) in a multi-Zeeman level atomic system is investigated both theoretically and experimentally.
本文从理论和实验上研究了多塞曼能级原子系统中偏振对四波混频抑制增强的影响。
Polarization dependence of the enhancement and suppression of four-wave mixing (FWM) in a multi-Zeeman level atomic system is investigated both theoretically and experimentally.
本文从理论和实验上研究了多塞曼能级原子系统中偏振对四波混频抑制增强的影响。
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