[KongchangAI]
Unverified82% confidenceDecision RuleTime unknown

螺纹节距(螺牙间距)决定拧转手感:大节距(粗牙)旋2-4圈即锁紧,适合低龄;小节距(细牙)需旋6圈以上,训练效果强但易让幼儿失去耐心,2岁以下优先选粗牙

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82%
Confidence
Long-term
Relevance
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