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底灰

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锅底灰（Bottom Ash）是炉子或焚烧炉中非可燃物的一部分。在工业环境中，它通常是指工业生产中可燃物（通常是煤）燃烧过程中粘附在燃煤炉的内侧壁上的物质。然而，从烟囱排出的灰烬通常称之为飞灰（英语：fly ash）。

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底灰
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