参数变化

According to the quasistatic model, the relationship is established between electron residual energy and driven laser polarization, intensity, wavelength, pulse and media ionization potential, residual charges. The electron residual energy change with the driven laser parameters and the media characteristical parameters is calculated. According to the calculated results, adequate driven laser parameters will be favor of the realization of OFI X-ray laser amplification.

作者根据准静态模型，建立了电子剩余能随驱动激光偏振度、激光强度、波长、脉宽以及介质电离能、剩余电荷数关系式，定量计算了电子剩余能随驱动激光参数以及介质本身一些性能参数变化关系，根据计算结果提出采用适合的驱动激光参数可能更有利于实现光场感应电离的X射线激光放大。

Two different generators of the transformation are used to calculate. We obtain two groups of nonlinear differential equations about flow parameter and give the expression of the physical parameters.

采用两种不同的生成函数进行计算，得出两组关于流参数的非线性微分方程，给出了系统参数随流参数变化的表达式。

the electrode system is one of the most sensitive and crucial parts in eit system.in this paper a method for eit electrode structure and parameter optimizing design,taking example for compound electrode,has been presented,which is based on the coercive equipotential node model of the line electrode.an imitation research plat-form of electrode structure and parameter optimizing design has been developed.by the methods,the variety influ-ences of electrode structure and parameters on reconstructed image and measurement sensitivity can be obtained.this will provide theory basis for the electrode construction optimizing design of real eit system.

eit电极系统是整个eit系统最为敏感和关键的部分之一。本文在线电极强制等势点模型的基础上，以复合电极为例，提出了一种电极结构及参数优化设计方法，并建立了电极结构参数优化设计仿真研究平台。可针对不同电极结构和各种参数变化给出其对eit成像质量和检测灵敏度的影响，进行优化设计，从而为实用化eit系统电极结构设计提供理论依据。

By analyzing the changes of water vapor concentration and the transmittance of 2400 cm-1 along with time, the results indicate that the changes of water vapor parameter of local area environment take effect on the transmittance of atmospheric model.

结合水汽的变化情况，分析了2400 cm-1的透过率随时间变化情况，说明在局地环境下水汽参数变化会对模型计算的大气透过率带来影响。

To develop the missile quasi-linear model, a state space model is established for missile dynamics, and function substitution method is used to describe the nonlinear dynamics of missile as linear combinations of functions of given time-varying parameters. With the minimizing variation range of model parameters over the whole design envelope as the optimum aim, linear programming optimum arithmetic is used to determine the model parameters at selected grid points.

为了建立导弹准线性化模型，将导弹动力学描述为状态空间形式；采用函数替换方法将导弹的非线性动力学描述为关于特定时变参数的函数的线性组合形式；以整个设计区间内模型参数变化范围最小为优化目标，采用线性规划优化算法确定了所选网格点上的模型参数。

The robust CNN template was designed, which provided a group of parameter inequality to satisfy its parametric change interval.

设计细胞神经网络模板参数的鲁棒性定理，该定理提供了一组参数不等式以确定满足该功能的参数变化区间。

Select steam initial temperature from 535℃to 660℃, and initial pressure form16 MPa to 34 MPa, We choose 494 sets of different steam properties in the selected sphere. Making the 494 sets of parameters basing points, We program and analyze how ideal cycle efficiency and relative cycle efficiency and absolute cycle efficiency vary with steam initial properties .

选定蒸汽初温从535℃到660℃，蒸汽初压从16MPa到34MPa范围内的494组不同的蒸汽初参数组，以这些初参数组为基点，编制程序，研究分析了机组理想循环热效率，汽轮机相对内效率，绝对内效率随初参数变化的规律。

It is well known that rotor parameters of induction motor are subjected to variability and hard to be measured, which will deteriorate performance of control systems based on the mathematical model depending upon rotor parameters, such as rotor flux oriented vector control system, indirect self-regulation.

由于工作原理和材料结构上的原因，异步电机的转子侧参数易变难测，因此所有建立在异步电机动态数学模型基础之上并且利用转子侧参数进行控制的调速系统都或多或少地受到转子参数变化的影响，例如广泛采用的按转子磁链定向的矢量控制系统。

The pulsed power supply used to perform the experiments consisted of three modules storing 800kJ as a driver for an ablation-controlled arc plasma generator. A sequence of tests in which the capillary radius, length and ablated material are varied and in which the capillary power dissipation levels are varied in a certain range are discussed in order to determine the impedance matching between the discharge and the power source.

利用一个总贮能800kJ的模块化电容基脉冲功率源系统为消融控制电弧等离子体发生器强流放电提供电能输入，在一定的参数变化范围内，实验研究了脉冲功率源初始放电参数、等离子体发生器几何参数以及消融材料对消融控制电弧放电特性的影响规律。

The static and dynamic characteristics of the beam of a gantry-type machining center are analyzed by means of ADAMS and ANSYS. Considering effect of gravity and cutting forces, the static deformation of the beam is obtained after calculating the interacting forces between the guide and the slide block by ADAMS. Moreover, the contact parameters of the guide surface are acquired by dynamic tests and parameter identification, then they are applied to the simulation model of the beam-slide box system, whose natural frequencies and modal shapes are achieved by modal analysis. Furthermore, the effect of changes of the contact parameters on the dynamic behavior of the beam-slide box system is also investigated.

对一种国产龙门式加工中心的横梁关键部件，采用机械系统多刚体动力学仿真软件ADAMS和有限元分析软件ANSYS进行了静动态特性分析；在考虑重力和切削力作用下，由ADAMS计算出导轨与滑块间的作用力，从而计算出横梁部件的静态变形；通过动态测试和参数辨识方法获得导轨结合面特性参数并将其应用到横梁滑箱系统整体有限元模型中，经过模态分析得到系统固有频率和各阶振型图，并进一步分析了结合面参数变化对横梁滑箱系统整体动态特性的影响。

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。