vertical tubular boiler是什么意思，vertical tubular boiler的翻译，vertical tubular boiler音标、读音、用法和例句

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vertical tubular boiler是什么意思，vertical tubular boiler的翻译，vertical tubular boiler音标、读音、用法和例句_淳朴汉英词典

vertical tubular boiler

基本解释

专业释义

經濟學