[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

烛芯材质影响黑烟:纯棉芯或木芯(燃烧有噼啪声)比含铅/金属芯更安全,欧美已禁铅芯但部分低价产品仍用锌芯。木芯火焰宽、放香强但需定期修剪至3-5mm避免黑烟

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curl https://kongchang.com/api/v1/knowledge/claims/418373
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get_claim(id=418373)