Open Ethan fire hole observation, coal layer surface in a furnace, appear local fire blaze, burning through phenomenon.
开启探火孔观察，炉内料层表面一片火光，出现局部冒火，烧穿现象。
Open Ethan fire hole observation, coal layer surface in a furnace, appear local fire blaze, burning through phenomenon.
开启探火孔观察，炉内料层表面一片火光，出现局部冒火，烧穿现象。
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