Consider the distributed parameter system described by the second order partial differential equation of composed type, we discuss its a boundary optimal control problem with quadratic performance.
考虑用二阶复合型偏微分方程所描述的分布参数系统，研究了它的一个使平方性能指标达到最小值的边界最优控制问题。
The application of the asymptotic solution of second order linear homogeneous equation with big parameter to studying the longitudinal and twisted vibrations of tapered sticks is discussed .
讨论了含大参数的二阶线性方程的渐进解，并将其应用于楔型杆的纵振和扭振的研究。
Making use of seismic frequency as order parameter, the master equation of order parameter which represents regular evolution of seismicity is established by means of adiabatic elimination principle.
对于地震断裂系统，利用地震频度作为序参量，并应用绝热消去法建立了代表地震活动演化规律的序参量所满足的主方程。
A family of highly accurate and three layer difference schemes containing parameter are constructed for solving parabolic equation of four order.
对四阶抛物型方程构造了一族含参数高精度三层差分格式。
By the microcosmic method of synergetics, established main equation of order parameter, which is the displacement of blocks compared to balance position.
运用协同学的微观处理方法，以岩石块体相对于平衡位置的位移为序参量，建立块体运动的序参量主方程。
This paper discusses briefly the origin, definition, dynamical evolvement equation and characteristic of synergetic order parameter.
简述协同序参量的来源、定义、动力学演化方程及其特性。
Proposed a new form of non-linear first-order ordinary differential equation, meanwhile, it shows the parameter form of universal solution.
提出一阶非线性常微分方程新的可积型，且给出其通解的参数形式。
The pressure drop pulsation is analyzed by using a lumped parameter nonlinear model. The results show that the pressure drop type instability can be described by a second-order differential equation.
使用集总参数非线型模型来分析蒸发管中汽液两相流压力降型脉动，结果表明：压力降型不稳定性可以用二阶常微分方程来描述。
The pressure drop pulsation is analyzed by using a lumped parameter nonlinear model. The results show that the pressure drop type instability can be described by a second-order differential equation.
使用集总参数非线型模型来分析蒸发管中汽液两相流压力降型脉动，结果表明：压力降型不稳定性可以用二阶常微分方程来描述。
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