名词
中文翻译：封闭式炉子
同义词：
['closed furnace', 'closed vessel furnace']
例句：
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1.The closed vessel furnace is used to heat the metal.
封闭式炉子用于加热金属。
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2.The closed vessel furnace is a popular choice for heating homes.
封闭式炉子是家庭供暖的热门选择。
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3. The closed vessel furnace is designed to be energy-efficient and environmentally friendly.
封闭式炉子设计为节能且环保。