Second-order derivative UV spectroscopy was used to measure the transfer of befunolol - HCl across full - thickness rabbit skin in vitro.
本文应用二阶导数紫外分光光度法考察了苯呋洛尔溶液体外经皮渗透性。
Moreover, due to the dynamic equations of LPMs with second-order derivative terms in time, the resulting structure-foundation-soil system can be solved by an explicit time-integration method.
此外，由于模型的动力方程具有二阶时间导数项，因而应用本文模型的结构—基础—土系统可以采用显式时间积分求解。
In this paper, the formula of partial derivative of second order on compound function of many varables is established.
本文建立了多元复合函数的二阶偏导数公式。
Gravity gradient is the second order derivative of gravitational potential, which can be observed by satellite gradiometer.
重力梯度为重力位的二阶导数，可以通过星载梯度仪进行观测。
The initial regular oblique derivative problem for nonlinear parabolic systems of several second order complex equations with measurable coefficients in a multiply connected domain is discussed.
论述了多连通区域上可测系数的二阶非线性抛物[型]方程组的初-正则斜微商问题。
Design of output asymptotic tracking for a class of descriptor second-order dynamical systems based on output plus derivative feedback is considered.
考虑了基于输出及其微分反馈的广义二阶动力学系统输出渐近跟踪设计。
This paper deals with general initial irregular oblique derivative boundary value problem for elliptic parabolic complex equations of second order in a multiply connected cylindric region.
讨论多连通柱体区域上二阶椭圆-物型方程的一般初非正则斜微商边值问题。
Reliability analysis using First Order Second Moment (FOSM) is important for structural probability design, in which process demands the derivative operation.
一次二阶矩法是目前求解结构可靠性分析的主要计算方法之一，该方法要求功能函数对随机变量的偏导运算。
The factor of the mixed partial derivative term controls the grid orthogonality. The other two factors of second order partial derivative terms control the grid spacing.
结果表明 ：方程中混合偏导数项系数具有控制网格正交性的作用；
This paper mainly deals with an initial-oblique derivative problem for nonlinear nondivergent parabolic systems of second order equations with measurable coefficients in a multiply connected domain.
讨论可测系数的二阶非线性非散度型抛物型方程组在多连通区域上的初-斜微商边值问题。
This paper mainly deals with an initial-oblique derivative problem for nonlinear nondivergent parabolic systems of second order equations with measurable coefficients in a multiply connected domain.
讨论可测系数的二阶非线性非散度型抛物型方程组在多连通区域上的初-斜微商边值问题。
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