查询词典 derived equation

Based on the discrete-time difference equation of the plant,an explicit solution of Diophantine matrix polynomial equations in multivariable generalized predictive control is derived without appealing to Diophantine matrix polynomial equations recursions or iterations,which makes the applications of generalized predictive control much more convenient.

直接利用被控对象的离散差分方程推导出多变量广义预测控制中Diophantine矩阵多项式方程的显式解，从而避免了其递推求解或迭代求解，使广义预测控制的应用更加方便。

A general equation was derived for calculating the coordinates of the convergent point. The physical meaning of the coordinates was discussed from the point of view of thermodynamics. The ordinates of the two kinds of convergence are the same, i.e. the free energy change of the solutes is equal to zero.

建立了溶质平均收敛点坐标的计算方程，并从自由能变的角度表征了收敛点坐标的物理意义，阐明了收敛点的纵坐标相等的原因是溶质在收敛点处的自由能变为零。

To simulate the diffusion of the vortex sheet into the flow field as time goes on, Koumoutsakos' analytical solution is employed, in which an effective vorticity flux is derived and used for solving the vorticity diffusion equation.

而涡片之环量随时间扩散进流场之现象则藉由Koumoutsakos之理论，以边界上之等效涡度通量求解扩散方程式，得解析解后，再将之离散为边界附近之新涡泡。

To simulate the diffusion of the vortex sheet into the flow field as time goes on, Koumoutsakos' analytical solution is employed, in which an effective vorticity flux is derived and used for solving the vorticity diffusion equation. The solution is then discretized into blobs (called "-blobs") in the vicinity of the boundary.

而涡片之环量随时间扩散进流场之现象则藉由Koumoutsakos之理论，以边界上之等效涡度通量求解扩散方程式，得解析解后，再将之离散为边界附近之新涡泡。

Based on the theory of the space-crossed-axeis internal gearing, the theoretical study on the internal gear honing method is carried out, and the equation of the internal honing wheel tooth flank is derived.

本文应用空间交错轴内啮合理论对内啮合珩齿方法进行了理论研究，推导渐开面包络内齿珩轮的齿面方程，采用微机模拟齿面接触分析。

With the dispersion equation derived above , the method for measuring the optical parameters of the single-layer is presented.

以等离子增强化学气相沉积法生长的SiO2薄膜为例，对其折射率和厚度进行了测定。

The location equation of PSD output signal independent of light intensity was derived.

导出PSD的输出信号与光强无关的位置方程。

In the work, the spin-dependent electrical conductivity and the current spin polarization are self-consistently derived applying the spin drift-diffusion equation on the ferromagnetic/organic structure.

在有机半导体自旋电子器件中，自旋从铁磁极注入到有机半导体后，自旋相上的极化子和自旋向下的极化子有不同的态密度，从而产生不同的电导。

The well-log oil saturation is one of the most important parameters that can be used to calculate OOIP of a reservoir,and is usually derived by Archie Equation in which the porosity cement factor m and saturation exponent n in a reservoir are determined by the measurements of rock resistivity in laboratory.

测井含油饱和度是计算石油地质储量的重要参数之一，通常由Archie公式获得，公式中的孔隙胶结指数m和饱和度指数n需依据岩石电阻率实验室测量结果确定。

Aimed at the problem of the salt bed wellbore creep and shrink under the drilling,based on the elasto-plastic mechanics theory and the head creep equation,the new formula of the control wellbore shrink rate was derived with in case of the plane strain and uniform in-situ stress,which was different from the old formula.

针对钻井过程中钻遇的盐层段井眼蠕变缩径问题，利用弹塑性力学理论，蠕变本构方程采用Heard蠕变方程，在平面应变和均匀地应力假设下，推导出控制井眼收缩的钻井液密度新公式，该公式与前人推导的公式不同。

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。