[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

材质优先选304/316不锈钢或12.9级合金钢,10.9级以下强度不足且长期暴露易锈死;沿海潮湿地区必须316不锈钢,普通碳钢发黑螺丝半年即锈蚀导致无法拆卸

1
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85%
Confidence
Long-term
Relevance
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