the second order conditions 二阶条件
second order sufficient conditions 检视二阶充分条件
second-order optimal conditions 二阶最优性条件
Using the analytic method of the anisotropic element, error estimate for the second order problem is obtained without the limitation of regularity conditions.
利用各向异性单元分析方法得到了二阶问题的误差估计，从而避开了正则性条件的限制。
The two conditions of the second order nonlinear differential equation with variable coefficient are given and expounded with examples.
对二阶变系数非线性微分方程的常系数化给出两个使其可积的条件，并举例论证。
Various borehole and formation conditions were simulated using the fourth order accuracy in space and second order accuracy in time centered finite difference method.
利用空间上具有四阶精度、时间上具有二阶精度的中心差分方法，数值模拟了几种复杂井眼条件下的波场。
应用推荐