Pulverized-coal-fired precombustion chamber is a kind of new coal burning equipment.

煤粉予燃室是一种新型的煤粉燃烧方式。

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Pulverized-coal-fired precombustion chamber is a kind of new coal burning equipment.

煤粉予燃室是一种新型的煤粉燃烧方式。

youdao