oil-fired gas-fired boiler
oil-fired gas-fired boiler
燃油燃气锅炉
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Environmental impact and running expense of minitype gas-fired boiler and oil-fired boiler are compared and analyzed in this paper from the environmental economy Angle.
从环境经济学的角度，对一般常用的小型燃煤锅炉与燃油(气)锅炉的环境影响及运行费用进行了比较分析。
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