The resolution of CCD is the key factor that impacts the measurement precision of new-type photoelectric autocollimator. Edge detection is the main method for CCD displacement measurement.
CCD的分辨率是影响新型光电自准直仪测量精度的关键因素，而边缘检测法是CCD位移测量的主要方法。
The belt offset adjustment mechanism uses photoelectric detection to check belt edge, without contacting the belt, to keep belt edge flat and prolong service life.
本机构光电检测皮带边缘，与皮带无触，保护皮带边缘平整，延长使用寿命；
The belt offset adjustment mechanism uses photoelectric detection to check belt edge, without contacting the belt, to keep belt edge flat and prolong service life.
本机构光电检测皮带边缘，与皮带无触，保护皮带边缘平整，延长使用寿命；
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