The company is producing gas furnace professional manufacturers.

公司是生产煤气发生炉的专业厂家。

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The analysis and improvement of the natural gas furnace are carried out systematically.

对天然气加热炉进行了系统分析和改进。

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And it will design simple structure, low cost, easy to use gas furnace and structural design parameter.

并设计结构简单、成本低、易于使用的燃气炉，给出结构设计参数。

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For example, a gas furnace must have at least a 95% efficiency rating to qualify for the credit.

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Nucor has a number of growth initiatives, including new natural-gas furnace operations, strategic acquisitions and international joint ventures.

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And with all that money saved by the superefficient gas furnace in your basement, you fly to Aspen for a weekend in the snow.

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