同时进一步提出对称校正的方法以解决逐点成像法固有的误差累积。

Meanwhile, we put forward symmetric correction to resolve inherent error cumulation of point-by-point imaging modality.

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求解低对称晶系晶胞参数的联立方程组的某些组合可使误差严重积累，构成病态方程组。

Some combinations of simultaneous equations for obtaining lattice constants of low-symmetry crystal systems can lead to a serious accumulation of errors and the formation of abnormal state equations.

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由于阻抗法易受过渡电阻、互感器误差、线路结构不对称等因素的影响，所以测距精度不高。

Because the impedance fault location method is easily influenced by the factor such as fault resistance, transformer error and asymmetrical line configuration, the fault location accuracy is lower.

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