Unverified80% confidenceDecision RuleTime unknown
容器口径与深度决定燃烧安全:口径≥7cm可避免蜡池边缘过热炸裂,玻璃杯壁厚≥3mm更抗热冲击;深口杯到底部时火焰接近杯壁易过热,剩余1cm蜡时应停止使用
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Unverified玻璃烛杯厚度影响安全:薄壁玻璃杯在燃烧末期蜡量少、火焰贴近杯底时易因局部高温炸裂,选择杯壁厚≥3mm或带金属/陶瓷外壳的更安全;蜡液剩余1cm时应停用87% similarUnverified剩余蜡厚度低于1cm(约容器底部)时应停止燃烧,继续点燃会使容器过热导致玻璃杯炸裂或烫伤台面85% similarUnverified剩余蜡量低于1cm(约烛底10mm)时应停止使用,防止容器底部过热开裂或引燃残余物82% similarUnverified燃烧时长与蜡杯直径正相关而非仅看容量:单芯蜡直径超过8cm会烧不透边缘,大直径蜡杯应选双芯或三芯设计80% similarUnverified双芯或三芯设计并非越多越好:多芯蜡烛点燃更均匀避免'隧道效应'(中间凹陷),但适用于直径≥9cm的宽口容器;直径小于7cm用多芯反而烧蜡过快、容器过热开裂80% similar
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