symmetry error

The radial and axial displacements of spherical arc center are primary reason for form error, and spherical symmetry error respectively.

球面圆弧中心径向位移是工件产生球面轮廓形状误差的主要原因，而球面圆弧中心轴向位移则是球面产生球形对称度误差的主要原因。

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Systematic check of symmetry group tables ( continued)& proof on the error of the general formula B of the space group p42/ nnm

对称群表的系统校验（续）&论证P42/nnm总公式B的错误

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Besides, the mode of multiple sub-optimal fading factors in STF will destroy the symmetry and positive definiteness of the prediction error covariance matrix, which results in the filter divergence.

此外，多重渐消因子矩阵在原强跟踪滤波算法中的作用方式可能破坏误差协方差阵的对称正定性，导致滤波算法的发散。

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ERROR : MASTER NODE 26 INSTANCE FIRSTONE IS NOT ON THE AXIS OF SYMMETRY.

可是我的26节点明明就在对称轴上啊!

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Taking the error occurring in no-load test of three phase AC traction motor in our company as example, analyzing with symmetrical components method, the main cause of error-three phase non-symmetry and corresponding solutions were given in this paper.

根据本公司轨道交通用三相异步电动机在空载试验时所出现的误差，用对称分量法进行分析，找出电源的三相不对称是三相异步电动机空载试验时产生误差的主要原因，并给出了相应对策。

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The error sources of IRO are analyzed. The spherical symmetry approximation of electron density is the main source of the inversion error.

分析电离层掩星误差源，指出电子密度分布的局部非球对称性是电离层掩星的主要误差源。

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