本文研究了解决大型稀疏对称正定线性方程组的一类预条件共轭梯度法。

This paper is investigated a preconditioned conjugate gradient method in solving a linear algebraic system of large sparse symmetric and positive equations.

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本文引入预条件共轭梯度法，提出了结合频域有限差分法结合分析二维柱体的电磁散射问题。

The finite-difference frequency-domain method with preconditioned conjugate-gradient technique is presented for two-dimensional cylinder scattering problems.

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本文引入预条件共轭梯度法，提出了结合频域有限差分法结合分析二维柱体的电磁散射问题。

The finite-difference frequency-domain method with preconditioned conjugate-gradient technique is presented for two-dimensional cylinder scattering problems.

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