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为什么蜡烛是先熔化后燃烧

更新时间: 2020-09-19 00:00:00     

可燃物在空气或氧气中燃烧,必须要达到该物质着火燃烧所需要的最低温度,这个最低温度叫做该物质的着火点。不同的物质,着火点不同。蜡烛要燃烧要达到着火点,而着火点比熔点高多以先融化后燃烧。

关键词: 为什么 蜡烛 熔化 燃烧

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