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探讨光栅成像式莫尔条纹计量装置中离焦误差的影响,提出用莫尔条纹方向的稳定性来提高光栅定位精度的方法。
The influence of the defocus error in grating moiré streak metering device was discussed. The method to improve the grating positioning accuracy by using the moiré streak direction stability was proposed.