The BEM is a new method of numerical calculation compared with other methods. It has many advantages, such as smaller order of equation, less data input, less internal storage and faster velocity .
边界元法是一种新的数值计算方法，与已有的其它数值方法相比，具有方程组阶数低、输入数据少、占有内存少、速度快等优点。
On one side of the equation are the calories we consume. Onthe other side are the calories we burn — through physical activity aswell as whatever is needed just to keep the body in good working order.
方程的一端是我们消费的热量，另一端是我们燃烧的热量——通过体育活动，还有保持身体良好工作秩序所需的各种办法。
As the time went on, the residual weight of isoprocarb in soil decreased, which was in keeping with the first-order kinetics equation.
异丙威在大白菜和土壤中的残留量随着时间延长而递减，符合一级反应动力学方程。
As time went on, the residual contents of pirimicarb in the cucumber fruits and soil decreased, which accorded with the first-order kinetics equation.
抗蚜威在黄瓜及土壤中的残留量随着时间延长而递减，符合一级反应动力学方程。
In this paper, the initial-boundary value problem of a kind of nonlinear fourth-order wave equations with damping and source terms is studied on the base of Beam equation.
本文在梁方程的基础上研究了一类具有非线性阻尼项和力源项的四阶波动方程的初边值问题。
As time went on, the residual weight of pirimicarb in different organs of the cucumber decreased, which was in keeping with the first-order kinetic equation.
抗蚜威在黄瓜不同器官中的残留量随着时间延长而递减，符合一级反应动力学方程。
And the eigenvalue problem of integral equation is transformed into a standard eigenvalue problem of a matrix with infinite order.
进而将积分方程形式的特征值问题转化为无穷阶矩阵的标准特征值问题。
By some abstract results of operator equation, the fourth order singular boundary value problem was discussed.
利用算子方程的一些抽象结果来讨论四阶奇异边值问题。
This paper studies a class of singularly perturbed two order integral differential equation boundary value problem with mixed boundary conditions.
研究了一类具有混合边界条件的奇摄动二阶积分微分方程边值问题。
In the process of state estimation, AC and DC equations are solved in turn, keeping all high order derivatives of Taylor series for the DC equation.
在估计过程中交直流方程交替求解，并对直流方程采用保留泰勒级数展开式中所有高阶项的方法。
This paper proposes the flux mapping method using the higher order harmonics of the neutron equation.
提出用中子方程的高阶谐波进行通量拟合的方法。
This paper proposes a new method of solving the high order linear partial differential equation by means of Walsh Series.
本文提出了用沃尔什级数求解高阶线性偏微分方程的一种新方法。
The initial boundary value problem of fourth order wave equation with dispersive and dissipative terms is studied.
研究具色散和耗散项的四阶波动方程的初边值问题。
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。
In this equation, the diffusion is a fractional order derivative of time and space.
在此方程中，弥散项和对时间的导数为分数阶导数所代替。
For a thermodynamic process model described by higher order state equation, the general method of reduction of order will meet with a vast amount of computation.
对高阶状态方程描述的热工对象，若使用通常的降阶方法，将会有很大的计算工作。
The frequency stability, amplitude stability and harmonic content can be deduced from the second order perturbation solution of that equation.
方程的二阶近似解显示出非线性效应对振荡频率稳定度、振幅稳定度及波形正弦纯度的影响。
At last, the general equation for separation of high order definite error is also presented.
最后给出了分离多阶确定性误差的通式。
The dynamics of leaf area accorded with the curves of second-order equation.
叶面积消长动态符合一元二次方程变化曲线；
In the regular solution problem of the perturbation equation, the solution of convergence order is important.
在扰动方程的正则化求解问题中，解的收敛性估计是十分重要的。
RESULTS Releasing in vitro of the strip conforms to first order kinetics equation.
结果：香荷药条的体外释放行为符合一级动力学方程。
This paper obtains a new oscillation theorem of high-order differential equation with damping.
本文建立了具有阻尼项的高阶微分方程新的振动定理。
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 condition of a one-order quasilinear partial differential equation of a traffic model forming unique shock wave is given end proved.
本文讨论了一交通模型的一阶拟线性偏微分方程激波产生唯一性的条件并给了严格的证明。
Essentially, the opposite reaction kinetics process is a process of resolving the first order ordinary differential equation.
对峙反应动力学过程，其实质是一个求解一阶常微分方程的过程。
This paper deals with the oscillation of the first order nonlinear neutral type functional differential equation, and obtains sufficient criterion of the equation oscillation.
本文研究一阶非线性中立型泛函微分方程的振动性。得到了该方程振动的充分性判别法则。
Only in this context, in order to use equation (13) of the axial force calculations.
只有在这个范围内，才能使用式(13)的轴向力计算式。
A regularity result of a class of second order divergence form elliptic equation was obtained.
得到了一类二阶散度型椭圆方程很弱解的一个正则性结果。
A regularity result of a class of second order divergence form elliptic equation was obtained.
得到了一类二阶散度型椭圆方程很弱解的一个正则性结果。
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