The key points are caloric value of coal, the fusing characteristics of coal ash and the temperature at furnace center.

其要点是煤的热值，煤灰的熔融特性以及炉膛的中心温度。

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The key points are caloric value of coal, the fusing characteristics of coal ash and the temperature at furnace center.

其要点是煤的热值，煤灰的熔融特性以及炉膛的中心温度。

youdao