查询词典 derived equation

A new conception of power per unit impedance is defined and the basic equation to express the variation of load voltage magnitude with the variation of its dynamic equivalent impedance and that of power per unit impedance is derived.

定义了单位阻抗功率的新概念，推导了电压幅值随其等值阻抗和单位阻抗功率变化而变化的基本方程式。

A theoretical equation for determining the mass transfer coefficient for removal of ammonia in water by vacuum membrane distillation has been derived. In addition, the influence of feed temperature, feed concentration and the pH value of the feed on K was investigated.

对真空膜蒸馏脱除水中氨过程总传质系数的计算式进行了理论推导，并以真空膜蒸馏实验考察了料液温度、料液浓度及pH值对总传质系数影响。

Based on code for design of steel structures GB50017-2003 and using the three column subassemblage model,a governing equation for determining the effective length factor of columns for non-sway semi-rigid composite frames was derived considering the effects of the nonlinear moment rotation characteristics of beam-to-column connections and composite action of slab.

本文基于钢结构设计规范GB50017-2003，利用三柱子框架模型，考虑了连接的非线性弯矩-转角关系和楼板组合效应的影响，推导了无侧移半刚性连接组合框架柱的有效长度系数方程式，同时考虑了梁端和柱远端不同约束情况对有效长度系数的影响。

The remote sensing equation for determining the profiles of the atmospheric temperature structure constant and wind have been derived by using the statistical characteristics of the fluctuated atmospheric microwave radiation.

推导出利用大气氧气微波辐射起伏统计特征，探测大气温度结构常数分布与风分布的遥感方程。

It was showed that the Richards polymorphic site index model could be directly derived by using the difference equation.

研究发现：利用差分方程途径可以直接推导出全新的Richards多形地位指数模型。

The Gompertz model is derived based on differential equation of growth-type curve, in order to get a method for prediction of production rate, accumulative production rate, recoverable oil, peak annual production rate and corresponding time of solution gas in oilfield, and determine the valid applicable range in field.

基于增长类型曲线微分方程，对实用的Gompertz模型进行了推导，得出了预测油藏溶解气产量、累积产量、可采储量、最高年产量及其对应时间的方法，并在矿场应用分析基础上确定了该模型的有效适用范围。

The fine structure Hamiltonian for Hydrogen-like atoms is derived using the nonrelativistic approximation of the Dirac equation for one electron moving in the Coulomb field.

从Coulomb场中运动的电子的Dirac方程出发，取其非相对论极限导出了类氢离子的精细结构哈密顿的表达式。

In this paper, the modeling theory of multi-rigid-body dynamics was thoroughly investigated in order to make up the shortcoming in the above modeling method. The major research achievements are as follows:①Based on the matrix of direction cosine between the body-fixed base and the reference base, and Poisson equation of a rigid body rotating, the coordinate transformation method for the modeling of treelike multi-rigid-body dynamics is derived. The method is very routinization and easy to use the computer to carry on the symbol derivation.

本文针对上述建模方法存在的不足，深入地研究了多刚体系统动力学的建模方法，并将所研究的新方法应用于惯性振动设备的建模，取得的主要研究成果如下：①基于刚体连体基关于参考基的方向余弦矩阵和刚体转动的Poisson方程，导出了建立树形多刚体系统动力学方程的坐标变换法，其过程极其程式化，便于利用计算机进行符号推导。

The model Boltzmann equation s, which are derived from the transformations of reduced distribution function and discrete velocity ordinate together, are solved through using an implicit flux-corrected second-order upwind TVD scheme.

模型 Boltzmann方程先后经简化分布函数和离散速度坐标变换后，采用一个隐式通量修正二阶迎风TVD格式差分求解。

Based on the linear elastodynamics theory, an analytical model is established for the propagation of generalized Rayleigh waves in a coated structure. Moreover, the dispersion equation is derived from the wave motion equations and the boundary conditions.

基于弹性动力学的线性理论，建立了涂层材料中广义瑞利波传播的理论分析模型，并且由波动方程和边界条件推导了波的频散方程。

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。