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jianyan
- 求取标准钉子的长度和直径,然后求取待检测的钉子的长度和直径与标准进行对比,最终得到待检测的钉子是否合格-Obtaining a standard length and diameter of the nail, and then taking a standard length and diameter of the nail to be detected by comparing the final nail to be detected is obtained eligibility