Unverified85% confidenceDecision RuleTime unknown
认准棉芯或木芯，拒绝含铅金属芯——燃烧时若烛芯发黑卷曲、火焰忽大忽小或产生黑烟，多为劣质芯或香精过量，木芯燃烧更均匀但需修剪至3-5mm
1
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85%
Confidence
Long-term
Relevance
-
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Unverified烛芯选无铅纯棉芯或木芯，避免含金属芯（早期部分含铅锌）；木芯燃烧有轻微噼啪声且火焰更大更旺，但需修剪至3-5mm否则黑烟明显94% similarUnverified烛芯选无铅纯棉芯或木芯，避免含金属芯（燃烧释放重金属）；木芯燃烧时有轻微噼啪声且火焰稳定，棉芯需定期修剪至5mm防止黑烟92% similarUnverified烛芯必须为无铅纯棉芯或木芯，避免金属芯（部分廉价产品用铅芯助燃）——木芯燃烧有轻微噼啪声但烟雾更少，纯棉芯需修剪至5mm防止黑烟90% similarUnverified烛芯选无铅纯棉芯或木芯，避免金属芯（尤其含铅锌芯）；木芯燃烧有轻微爆裂声、火焰大、香味扩散快，但更易燃烧不均需修剪89% similarUnverified烛芯选无铅纯棉芯或木芯，避免金属芯（尤其含铅芯），点燃后烛芯顶端应无黑色金属丝残留；木芯燃烧有'噼啪'声但烟雾更大，纯棉芯烟雾最少89% similar
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