The conjugate gradient method was selected as the inversion kernel.
该方法选取共轭梯度反演算法为拟三维反演的核心。
The conjugate gradient method is employed in developing the algorithm.
在计算方法上，采用共轭梯度法。
The conjugate gradient method is one of the most efficient methods for solving unconstrained optimization problems.
共轭梯度法是求解无约束优化问题的一类有效方法。
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