v-type

• In the mean time , the squeezing spectrum of resonance fluorescence of a v - type three - level atom driven by a coherent field and coupled to a cavity is also studied
  同时我们还研究了置于腔中的由相干光场驱动的v型三能级原子的共振荧光的压缩谱。
• Flow feature : the intrinsic flow feature of v - type regulating ball valve approximates the intrinsic flow feature of equal percentage , the featrre curve is shown as fig . 3
  流量特性: v型调节球阀的固有流量特性为近似等百分比固有流量特性,特性曲线如图例所示
• Professional racing - field : the 3000 ? stunt competition park includes : eight v - type curve , three slope house , three wavy mounds , one bridge , one stunt board , s - type raceway
  专业赛道：赛道由八个弯道、三个高房坡、三个土坡台、一个桥梁、一座断壁跳台及空中跑道组成的3000平方米园内赛场。
• We use full quantum theory to investigate the decay distribution of atoms in one - dimensional photonic crystal and the quantum interference property of a v - type three - level atom placed between two parallel plates
  采用全量子理论，本文研究了一维光子晶体中原子自发发射的寿命分布和置于两平板介质之间的v型三能级原子的量子干涉性质。
• Providing rotary and swing - type mixing , this advanced logic machine features the advantage of combined v - type , u - type , diagonal - type and dual - hammer mixers . helical blades inside the swing roller help stir when the roller rotates and swings to mix
  本机搅拌采回转及摇摆方式，结合v型、 u型、对角型及双锤型等混合机之优点，为最新技术及合理化之机型。
• In chapter 2 , we use an open v - type three - level system model with incoherent pump put forward by yelin , and give a universal nonlinear analytical solution of the steady state by density - matrix equations of motion
  第二章中我们使用了yelin等提出的具有非相干泵浦的开放v型三能级系统模型，通过密度矩阵运动方程给出了该系统的定态非线性解析解的普遍表达式。
• By numerical calculation of the solution , in chapter 3 , we give nonlinear theory of the open v - type system with a monochromatic incoherent pump . the chapter comprises sections of resonant nonlinear theory and off - resonant nonlinear theory
  利用解析解的数值计算，第三章讨论了单色非相干泵浦系统的非线性理论，包括共振的非线性理论和失谐的非线性理论两节。
• Based on the work of the former people , in this paper , we mainly studied the effect of the driving field phase fluctuation , the effect of gaussian transverse profile of the driving and laser fields , the doppler effect and so on for the open v - type lwi system
  本文在前人工作的基础上主要讨论了开放的v型三能级系统中驱动场的相位涨落、驱动场与激光场的横向效应以及doppler展宽对产生无反转激光的影响，并讨论了系统其他各种参数的作用。
• Finally , we use resonance fluorescence theory to study the quadrature squeezing spectra in the resonance fluorescence of a v - type three - level atom driven by a coherent field and coupled to a single - mode cavity . the influence on the squeezing spectrum caused by cavity - induced quantum interference is discussed
  本文还应用共振荧光理论，研究了一个置于腔中的v型三能级原子的共振荧光的压缩谱，探讨了腔诱导量子干涉对原子共振荧光相振幅的压缩谱的影响。
• In chapter 4 , we study nonlinear theory of the open v - type system with two - color incoherent pump . in this chapter , we discuss the conditions for the onset of lwi and the stability of the system in the limit of strong driving field , and the effect of incoherent pump rate rt on the gain , dispersion and population differences . we also discuss the effect of nonlinearities and the effect of pumping rate threshold of the pumping field
  接着第四章讨论双色非相干泵浦系统的非线性理论，分析了强驱动场情况下的lwi产生的条件和稳定性、非相干泵浦速率r ~ 1对增益、色散和粒子数差的影响；讨论了该系统的非线性效应和非线性对非相干泵浦速率r ~ 1与r阈值关系的影响。