边界是指相对于输入等价类和输出等价类而言，稍高于其边界值及稍低于其边界值的一些特定情况。基于边界的方法是根据定义域来实现的，最终演变成边界值分析、健壮性测试、最坏情况测试和健壮最坏情况测试四种技术。
基于对偶边界积分方程（DBIE）构造代数方程组，采用广义极小残值迭代法（GMRES）求解。
The algebraic equation from the dual boundary integral equations(DBIE) was solved using the generalized minimum residual method(GMRES).
自动边界数据采集系统是用梯度边缘追踪法自动获取左室内膜边界的曲线点，使用三次曲线插值法及最小二乘法拟合整条左室边界曲线。
The system of automatic boundary data acquisition can obtain the curve data of the endocardium boundary of left ventricle with the tracing algorithm of the gradient image edge.
本文用特征值法研完了叶片频率失调及盘片耦合对叶栅颤振边界的影响。
The eigenvalue method is presented for determining the effects of blade mistuning and blade-disk on cascade flutter boundaries in incompressible flow.
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