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What does it mean that the shape and position tolerance label is followed by CYLTLSCYG50?
CYLt peak-valley cylindricity error: the sum of absolute values of the maximum positive local cylindricity error and the maximum negative local cylindricity error. See GB/T 24633.438+0-2009.

LSCY least square evaluation of foundation column: the maximum positive local cylindricity error of foundation column deviation from least square evaluation. See GB/T 24633.438+0-2009.

The publicity meeting of this standard training will be held in Dalian, and you can go to www.pcmi.com.cn for relevant information.

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