名词
中文翻译：延长炉
同义词：
['extended boiler', 'extended heater例句：1. The engineer designed an extended furnace to increase efficiency.（工程师设计了一个延长炉来提高效率。）']
例句：
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1. The engineer designed an extended furnace to increase efficiency.
工程师设计了一个延长炉来提高效率。
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2. The company has invested in a new extended furnace to improve its production line.
该公司投资了一个新的延长炉来改进其生产线。
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3. The extended furnace was used to heat the building during the winter months.
在冬季，这个延长炉被用来加热建筑物。