The mathematic model of concentricity error and a advanced optimal method - "cosine shift plus" are put forward.
提出了同轴度误差的数学模型，其中给出一种高效的优化方法一余弦移位相加法。
This kind of bearing outer ring raceway is spherical shape, so the self-aligning good performance, to compensate concentricity error.
该类轴承外圈滚道是球面形，故其调心性能良好，能补偿同轴度误差。
Because of the locating error of the part, it is difficult to assure the concentricity between the two holes.
由于存在定位误差，两孔之间同轴度很难保证。
Because of the locating error of the part, it is difficult to assure the concentricity between the two holes.
由于存在定位误差，两孔之间同轴度很难保证。
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