In this paper ; a closed V-type three-level system is studied .
研究了封闭的V型 三 能级 激光 系统。
On the squeezing effect of the light field in a Λ - type degenerate quantum-beat three-level system
∧-型简并量子拍频 三 能级 系统中的光场压缩效应
In this regard turn a group of turns and dialogical fragment constitute a three-level system of dialogical discourse from low to high levels .
话轮、对话统一体和对话语段构成了对话语篇由低到高的 三个不同的层级 体系。
Theoretical Study of Fifth-Order Polarization Beat Frequency in a V Type Three-Level System
V型 三 能级 系统中五阶极化拍频的理论研究
The new effects of phase-conjugation asymmetric attosecond sum-frequency polarization beat ( ASPB ) of twin composite color-locking stochastic fields in cascade three-level system are investigated .
研究了级联 三 能级 系统中孪生色锁随机光场的相位共轭阿秒和频极化拍频（ASPB）不对称新效应。
Investigation of Transient Properties of Electromagnetically Induced Transparency in a Λ - Type Three-level System
∧型 三 能级 系统中电磁感应透明特性的研究
Design of ring laser resonator for dimer vapor with three-level system
用于二聚物 三 能级蒸气激光 系统的环形谐振腔设计
Using the kinetic rate equation a new method for obtaining the molecules ionization cross section σ m ' and the nonradiative relaxation rate y for a three-level system has been presented .
利用动力学速率方程，得到了一种获得分子 三 能级 系统的电离截面δm~′和无辐射弛豫速率γ的新方法。
The new mode of cost control is constructed by a three-level system which consists of a system of current control fore - control and target control .
成本控制新模式的核心是由现实控制，超前控制和理想控制构成的 三 层 控制 体系。
Nondegenerate four-wave mixing in a Doppler-broadened three-level system
三能 级多普勒展宽 系统中的非简并四波混频
Lasing without Inversion Induced by Raman Process in ∧ - Type Three-level System
∧型 三 能级 系统中Raman过程诱导的无反转激光
From the development of the law in the ancient and modern trial-level system the three-level system reflects the requirements of litigious fairness efficiency and benefit .
从古今中外审级制度的发展规律来看，作为审 级 制度组成部分的 三大诉讼审级 制度都在不同程度上反映了诉讼公正、诉讼效率利和诉讼效益的要求。
Coherent Control of Transient Evolution of Optical Properties in a Ladder-Type Three-Level System
Ladder型 三 能级 系统光学性质瞬态演化的相干控制
Dressed-atom approach is used to study the saturation effect of an optically pumped three-level system .
运用缀饰原子方法研究光泵 三 能级 系统的饱和效应。
Based on the second-order coherence function theory authors have studied nonlinear effects of third-and fifth-order on polarization beats in a cascade three-level system ( TPBCTS and FPBCTS ) .
本文采用二阶相干函数理论研究了级联 三 能级 系统中三阶及五阶极化拍频（TPBCTS及FPBCTS）的非线性效应。
A Study of Dynamical Processes of the Three-Level System Pumped by Ultrashort Pulse
超短脉冲泵浦 三 能级 体系的动力学过程的研究
Firstly we studied the transitions in three-level system driven by a trichromatic field and probed by a monochromatic field . Based on that we wrote out the density matrix equation .
首先研究了 级联 型 三 能级 模型在三色驱动场和单色探测场作用下原子的跃迁情况，据此写出了密度矩阵所满足的方程。
A formula of energy storage in three-level system is deduced which is different from the previous results in which the upper state lifetime is taken as the energy storage time .
推导了准 三 能级 系统的储能公式。此公式与以前的结果不同，认为有效储能时间不等于上能级寿命。
Further more a detailed comparative study of two-level system and three-level system is conducted . The simulation results three-phase current waveforms the electromagnetic torque waveform are given .
并且与两 电平 系统从三相电流波形、电磁转矩波形进行了详细的对比分析，分析发现采用 三 电平 变流器后，电流的谐波明显减少，更加接近正弦波，电磁转矩脉动得到改善。
Nonlinear effects on V-type three-level system polarization beats
V型 三 能级 系统中高阶非线性效应的研究
Study of Dynamical Characteristics of Ultrashort Laser Pulses in a V-Type Three-Level System
超短激光脉冲在V型 三 能级原子 介质中的动力学特性研究
Nonlinear Response of a Three-level System Driven by a Trichromatic Field and Probed by an Arbitrary Intense Monochromatic Field
三色场驱动和任意强度单色场探测 三 能级 系统的非线性响应
The higher-order coherence function theory has been applied to study the fifth-order nonlinear effect on polarization beats of a cascade three-level system ( FPBCTMS ) in Markovian field .
运用高阶关联函数理论研究了级联 三能 系统Markovian场的五阶非线性效应（FPBCTMS）。
The subject of the work done mainly in the following areas : First of all the atomic spontaneous emission stimulated emission and stimulated absorption were analyzed in the light-emitting mechanism the atomic transition of the three-level system and the four-level system models were established .
本课题所做的工作主要有以下几个方面：首先，从光的发光机理出发，分析了原子的自发辐射、受激辐射和受激吸收，建立了原子跃迁的 三 能级 系统和四能级系统模型。
Efficiency of single photon emission in three-level system of semiconductor quantum dots with pulsed excitation
脉冲激发 三 能级 体系半导体量子点的单光子发射效率
Theoretical Investigation on the ( 1 + 1 ′ + 1 ′) Resonant Ionization Dynamics of Three-level System
三能 级 系统的（1+1′+1′）共振电离动力学的理论研究
The characteristics of rare earth doped fibers and the principle of fiber amplifier with three-level system are described .
简述了稀土掺杂光纤的特性，以及 三能 级光纤激光放大的基本原理。
Some Decomposition Models for Three-level System Optimization and Their Coordination Algorithms
三 阶 系统优化的分解模型及其协调算法
Cavity Field Spectra of a Λ - type Quantum-beat Three-level System
∧型量子拍频 三 能级 系统的腔场谱
Considering the EDF as a homogeneously broadened three-level system the operation principle of this laser is discussed and the output characteristics is simulated .
采用掺铒光纤的均匀展宽 三 能级 系统 理论 模型，分析了该激光器的工作原理，并对其输出特性进行了数值模拟。
三能级系统