名词
中文翻译：烟道气回送
同义词：
['flue gas recirculation', 'flue gas recovery']
例句：
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1. The plant usesflue gas to power its fans.
该工厂使用烟道气来为其风扇供电。
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2. The flue gas is then sent back into the chimney.
然后，烟道气被送回烟囱。
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3.The flue gas must be treated before it can be released into the atmosphere.
烟道气在排放到大气之前必须经过处理。