查询词典 derived equation

The principle of optical coherence domain polarimetry was demonstrated and the beat-length measurement equation was derived.

基于光相干域偏光测试技术，提出了一种高精度的保偏光纤拍长测试方法，实现了不同结构、不同尺寸保偏光纤的拍长测试。

The paper introduces a differential equation derived from Markov theory and probability generating function.

文章介绍用Markov理论与母函数方法建立相关微分方程，并导出近似解析解，着重对常数源在系统中的涨落作了数学描述，给出了数值例子。

Then the contour of bandgap energy of AlGaInPAs and GaInPAsSb on different substrate materials are depicted. 2. The generalized boundary equation of miscibility gap in a Ⅲ-Ⅴ quinary and its explicit expression for two types of quinaries are derived for the first time, based on the relationship between Gibbs'free energy and the boundary of miscibility gap in a multicomponent solid solution.

首次从多元化合物的吉布斯自由能函数和互溶隙边界的内在联系出发，推导出了描述Ⅲ-Ⅴ族五元系化合物中互溶隙边界的一般方程，并结合在正规溶液近似基础上给出的五元系自由能表达式，推导出两类Ⅲ-Ⅴ族五元系化合物的互溶隙边界的显性表达式。

According to the theoretical basis of thermokinetics, the thermokinetic reduced parameter equation of opposing reaction has been derived, and the mathematical models of the reduced parameter method for opposing reaction have been established.

根据热动力学基本理论，推导了对峙反应的热动力学对比参量方程，建立了对峙反应对比参量法的数学模型。

The regression equation and regression line are derived using the least-squares technique.

回归方程式及回归线可以采最小平方法之技术求得。

On the basis of regular wave transformation equation in a reference[1] incorporating comprehensively environmental current,nonlinear dispersion effect,rapidly varying topography effect,energy loss due to bottom friction,refraction and diffraction, the governing equations are derived for irregular multi-directional wave transformation incorporating multi factors according to the principle of superposition of linear wave and the wave directional spectrum theory.

1引言波浪在由外海向近岸的传播过程中，由于受到复杂地形、障碍物和水流等因素的影响，波浪传播将发生变形。文献[2]对描述波浪在近岸传播变形的各种数学模型方法做了较为全面的、系统的回顾和总结。

Firstly, based on the force acting on a single-particle, establish a discriminant formula of the sand threshold, and prove that the sand threshold belongs to the cusp catastrophe. Then establish the basic equation of the cusp catastrophe using coordinate transformation and catastrophe theory. Finally, while particle Reynold number and equivalend diameter are the state variables and Shields parameter is the control variables, we can obtain the model of cusp catastrophe of sand threshold, putting those variables into the basic equations of the cusp catastrophe. The model is derived from the mathematics, which has a certain mathematical theory foundation.

首先从单颗沙粒受力分析出发，建立沙床沙粒起动条件判别公式，进而证明了风沙起动属于尖点型突变；然后通过坐标变换和突变理论建立了尖点突变的基本方程；最后本文选择颗粒雷诺数和等效粒径作为控制变量，希尔兹参数作为状态变量，并把它们代入尖点突变的基本方程，经过拓扑变换得到风沙起动的尖点突变模型，并与前人的公式及实验数据进行比较。

The optimal tracking feedforward and feedback control law is derived from a Riccati equation.

最优跟踪控制的目的是寻求一种控制律，使得对于给定的性能指标取极小值，即使系统输出以一

First of all, the multi-degree-of-freedom equation of motion of the rotor-bearing system, under the action of non-linear oil forces, are derived by Ritz＇ s method according to d＇ Alembert＇ s principle.

轴承系统的不平衡量，给出了一种适合参数识别的非线性油膜力表达式，并引入遗传算法来识别非线性油膜力的动力系数和不平衡的大小和位置。

First, one root of the N-order nonlinear equation is derived with the Aitken iterative method.

LSP参数可以通过求解一个与线性预测系数相关的非线性N阶方程得到。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。