[KongchangAI]
Unverified82% confidenceDecision RuleTime unknown

孔位与形状块的配合公差建议在1-2mm:过紧(<0.5mm)导致低龄幼儿反复失败挫败感强,过松(>3mm)则失去形状匹配的锻炼意义,1-2岁选公差偏大款

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