偏心射孔器 eccentered gun 偏心差 equaiton of centre ;error of centric position ;error of eccentricity 偏心平面位置指示器 offset-centre plan position indicator ..
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An eccentricity error mathematic model was built up based on the measurement principle of the optical angular encoder and error analysis.
通过对光栅角编码器测角原理和偏心误差产生原因的分析，建立了偏心误差模型。
With a collimator and a 23 polyhedron as measuring datum, a set of optical angular encoder measuring data, which containing the eccentricity error, was obtained.
以平行光管和23面棱体为基准，得到存在偏心误差的一组光栅角编码器测量数据。
The measurement method of eccentricity for thick and short stick-type component and its error analysis are explained.
说明了偏心位置的测量方法及其误差分析。
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