条件方程

Preserved-amplitude migration ; One-way wave equation ; Fourier finite difference ; Migration operator ; Boundary conditions ; Imaging conditions

保幅偏移；单程波方程；傅里叶有限差分；偏移算子；边界条件；成像条件

This model takes the initial values of elements of exterior orientation as the virtual observations and collinearity equation as conditions.

该模型把外方位元素的初值看作虚拟观测值，以共线方程为条件，通过少量的GCP点（少于3个）建立条件方程式，平差解算出外方位元素的改正数，从而获得外方位元素的最或然值，配合DEM数据实现影像的精确纠正。

By applying the comparison theorem and some new analysis technique, some sufficient conditions which guarantee the permanence of the system are obtained. After that, by constructing a suitable Lyapunov function, sufficient conditions which ensure the global attractivity of the system are obtained.

利用差分方程的有关理论，使用与前面不同的分析方法，获得保证该系统永久持续生存的充分性条件；其后通过构造适当的差分Lyapunov函数，得到保证该系统全局吸引的充分性条件。

Vehicle-bridge vibration system can be divided into two subsystems at the interface of wheel and bridge, one for the bridge and the other for the vehicle. The vehicle-bridge coupling relationship, including the geometrical compatibility condition and the static equilibrium condition between vehicle and bridge, is established.

将整个车桥系统在车轮和桥梁接触处划分为车辆、桥梁两个子系统，通过车轮和桥梁接触点处位移协调条件和力的平衡条件建立了车-桥系统动力方程。

Based on the analysis of the relationship between vegetable and meteorological condition,the regression equation to guide the Beijing vegetable carriage by temperature and relative humidity was derived.

中文摘要：在分析蔬菜与气象条件关系及北京地区气候条件下温湿日变化特征的基础上，应用线性二元回归方法建立了蔬菜运输指数与温度、相对湿度之间的线性回归方程。

It is shown that including current trading volume in the conditional variance equation of EGARCH model dramatically reduces the persistence of the conditional variance, meaning that the current trading volume is a good proxy variab...

在EGARCH模型条件方差方程中加入当前交易量可以显著降低条件方差波动的持续性，表明当前交易量可以代表引起收益率 ARCH效应的新信息。

By means of integralequation methods creatively along with other modern mathematical theories,this paperfocuses on finding solvability conditions and conditional well-posedness(especiallyconditional stability),constructing stabilized algorithms,and carrying throughnumerical simulation.

本文创造性地应用积分方程方法，借助现代数学手段，着重研究这些问题的可解性条件、条件适定性，构造稳定化算法，并进行数值模拟。

The bending of rectangular plate is divided into the generalized statically determinate bending and the generalized statically indeterminate bending based on the analysis of the completeness of calculating condition at the corner point. The former can be solved directly by the equilibrium differential equation and the boundary conditions of four edges of the plate.

在分析角点求解条件完备性的基础上将矩形板弯曲划分为广义静定问题和广义超静定问题，广义静定弯曲可以由板的平衡微分方程及四边边界条件直接求解，广义超静定弯曲可以由叠加法求解。

A simplified method was proposed to deal with the boundary condition at the turbine unit for transient calculation. This method is based on the statistical analysis of turbine hill chart and the Eular equation for water turbines. According to the Eular equation, the basic geometry parameters of the turbine, such as guide vane opening a, blade outlet angle β2, the relative blade width of outletb2, the relative height of wicket gateb0 and the relative turbine exit radiusr2 are obtained through curvilinear regression of the water turbine hill charts.

为解决目前水轮机过渡过程计算中确定水轮机边界条件时通常使用的外特性法和内特性法的不足之处，结合这2种方法的优点，提出一种在水轮机过渡过程计算中处理水轮机边界条件的方法，即根据综合特性曲线的数据，利用统计分析方法和水轮机基本理论公式，计算水轮机基于内特性解析方程的基本参教，如出流角α、转轮出口安放角β、转轮出口相对宽度b2、导叶相对高度b0、转轮出口相对半径r2，在特性曲线上的规律。

The research on the improvement for the convergent quality of"the Nodal Green's Function Method For Cylindrical Geometry on Neumann Boundary Condition Based on Green's Functions on slab geometry"is an original work.

在本论文中，"基于贝塞尔函数的第二类边界条件圆柱几何格林函数节块法"在中子扩散方程求解方法研究领域中是首创的，属创新成果；关于改善"基于平板几何格林函数的第二类边界条件圆柱几何格林函数节块法"的收敛性能的研究也属创新成果。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。