It is also a sufficient condition for second order linear differential equation with varied coefficient to be integrable.
对于二阶变系数线性微分方程来说，这也是可积的一个充分条件。
Using position data to obtain velocity parameters of object through differential coefficient is a general method in range.
通过对定位数据求微分以获得目标的速度参数，是靶场估计目标运动参数的常用方法。
This paper establishes a delay differential inequality with varying coefficient and varying delay.
本文首先建立一个变系数变时滞微分不等式。
In approximate calculation of radiation transport differential equation absorption coefficient is a fundamental parameter.
辐射传输方程微分方法的近似解通常以吸收系数为基本参数。
By the discretization of spatial variable in the equation, a third-order differential system of equations containing periodic time-varying coefficient is derived.
采用微分求积法对方程中的空间变量进行离散，得到仅含有时间变量的三阶周期系数微分方程组。
In this paper, a cross-section function of brick chimney has been assumed based on traditional hypothesis and a variable coefficient free-vibrating differential equation has been derived.
本文假设了接近砖烟囱实际截面面积的函数，推出了一个变系数的自由振动微分方程。
Differential coefficient method together with distribution parameter estimation is put forward, so that the data processing may be implemented on a computer, thus greatly reducing calculation.
提出了在用改进雨流计数法进行载荷数据统计时结合载荷分布参数估计的变差系数法，可简化统计处理过程，提高计算速度。
We assume that the motion of controlled object is describedby linear ordinary differential equations with variable coefficient, and the final states ofthe system form a convex region of phase space.
受控系统的运动设为变系数线性常微分方程组所描述，而系统的终点状态是相空间内的某一凸性区域。
The differential coefficient of smooth function was taken as a mother wavelet for researching the sensitivity segment of inflexion of pipeline leakage signal.
以光滑函数的一阶导数作为小波母函数 ，研究了管道泄漏特征信号拐点区间的敏感性 ，突出小波变换系数的局部极值性。
Objective: To establish a simple rapid method for determining Kjeldahl nitrogen content by 1st order differential coefficient single sweep polarography.
建立用一阶导数单扫描极谱法测定食品中凯氏氮含量的简单、快速的方法。
Objective: To establish a simple rapid method for determining Kjeldahl nitrogen content by 1st order differential coefficient single sweep polarography.
建立用一阶导数单扫描极谱法测定食品中凯氏氮含量的简单、快速的方法。
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