介绍了光纤光学参量放大器的理论，基于耦合波方程推导出光纤光学参量放大器的增益表达式。
Theory of fiber optical parametric amplifiers (FOPAs) is introduced and the expression for the gain of FOPAs is deduced from the basic coupled wave equations.
本文通过引入一个与波的入射角度有关的参量，给出一种单程波动方程的构造方法。
We present a method for constructing one-way wave equation with the use of a parameter that is related to the Angle of wave incidence.
由该模型得到了利用纤维束冲击拉伸试验确定单丝应变率相关的统计本构方程中力学参量的原理和方法。
The method to determine the mechanical parameters in the constitutive equations of the rate-sensitive fiber by the tensile impact test of the fiber bundle are proposed from such models.
方程(7)中有三个参量，它们能够通过和实验数据进行比较来确定。
There are three parameters in the equation (7). That may be determined by a comparison of experimental data.
利用横向谐振法结合奇异积分方程技术，导出了具有快速收敛特性的不连续性等效电路参量计算公式。
A formulation for the equivalent circuit parameters of the discontinuities with superior convergency is derived by the transverse resonance method with the singular integral equation technique.
复杂应力条件下的黄土损伤演化方程的表现形式与简单加载条件下的完全相同，区别只是在于损伤参量的影响因素不同。
Although the expressional form of damage evolution equation in complicated stress condition is the same as that in simple load condition, the influence factors are different of the damage parameters.
简述协同序参量的来源、定义、动力学演化方程及其特性。
This paper discusses briefly the origin, definition, dynamical evolvement equation and characteristic of synergetic order parameter.
首先充分考虑了系统参量的频率和方位角特性，提出了适合低频uwb -SAR校准的雷达方程。
Firstly, with the consideration of the frequency and aspect Angle dependent parameters of the low frequency UWB-SAR, the radar equation for calibration is proposed.
以标准养护试块的试验结果建“立无损参量-试块强度”的回归测强方程。
Based on standard curing blocks' experimental results, regression strength equation with nondestructive parameter-test block strength is established.
求解了两光束无量纲束宽参量的耦合微分方程。
The coupled differential equations of the dimensionless beam width parameters of two optical beams are solved.
按照参量互作用的观点推出多维声电光效应的耦合波方程，并给出多维声电光效应衍射效率计算公式。
The coupled wave equation of multi dimensional Acousto electro optic(AEO)effect is derived according to the opinion of parameter interaction.
该模型给出了一个新的背应力演化方程，引入了非比例度参量，并且还考虑了最大塑性应变幅值记忆效应和温度效应的影响。
In this model, a new kinematic hardening equation was used; the non-proportionality, the effect of temperature and memorization for the maximum plastic strain amplitude were also considered.
由序参量的自洽方程发现，在具有排斥两体相互作用的超冷费米原子气体中，原子的BCS转变不可能发生。
From the self consistent equations, we have found that BCS condensation of atoms can't occur in such a repulsive two body interaction Fermi gas of atoms.
对于地震断裂系统，利用地震频度作为序参量，并应用绝热消去法建立了代表地震活动演化规律的序参量所满足的主方程。
Making use of seismic frequency as order parameter, the master equation of order parameter which represents regular evolution of seismicity is established by means of adiabatic elimination principle.
基于偏微分方程的图像非线性扩散滤波，关键是确定合适的扩散机制与参量。
The key of image nonlinear diffusion filtering based on PDE (Partial Differential Equations) is to determine the appropriate diffusion mechanism and parameters.
在物理学中，物理参量随时间的演化往往是由非线性的偏微分方程支配的。
In physics, the physical parameter evolution along with the time is often controlled by the non-linear partial differential equation.
本文用参量变换法直接导出了有耗光纤的孤波方程及其基态孤子解。
In this pater, using parametric transform method direct derive soliton wave equation of loss optical fibers and elementary soliton solution.
运用协同学的微观处理方法，以岩石块体相对于平衡位置的位移为序参量，建立块体运动的序参量主方程。
By the microcosmic method of synergetics, established main equation of order parameter, which is the displacement of blocks compared to balance position.
本文以两个自变量的拟线性双曲型方程的古尔沙问题为例，应用反函数和积分不等式证明了等价积分方程组解的存在唯一性，同时给出了解的存在区域和已知参量的依赖关系。
In this paper, we show the domain of the existence of the solution on Goursat problem for quasi—linear hyperbolic equation and obtain the Theorem of the existence and uniqueness in above domain.
应用微波网络理论建立了基本方程，运用矩阵方法推导出待测件散射参量的闭定式表达式。
The closed form expressions for devices under test are derived by means of microwave network theory and matrix techniques.
将该参量非局部化后代入非局部损伤本构方程中得到混凝土非局部应力与应变关系曲线，其方程为一维状态下的混凝土非局部损伤本构模型。
And nonlocalizing the damage parameters and then substituting them to nonlocal damage constitative model, thus the nonlocal stress_strain relation curve is obtained.
在此基础上，运用变分法得到了椭圆厄米高斯光束各参量的演化方程、演化规律和两个临界功率。
Based on this, the evolution equations, evolution laws of elliptical Hermite-Gaussian light beam's every variable and two critical powers are also derived using variational method.
在此基础上，运用变分法得到了椭圆厄米高斯光束各参量的演化方程、演化规律和两个临界功率。
Based on this, the evolution equations, evolution laws of elliptical Hermite-Gaussian light beam's every variable and two critical powers are also derived using variational method.
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