以下为句子列表：
英文: A displacement ventilation system was provided, it can form the air layerat the bottom of room so that resistance dewiness air meet directly the cold floor surface.
中文: 本文采用房间下部送风的方式，使之形成地面“空气湖”，阻隔潮湿空气与室内地板表面的直接接触。
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英文: Abstract: An antifreezing ventilation system at winter in a gold mine is designed by use of the earth temperature preheating technology.
中文: 文摘:利用地温预热入风流技术，设计了金厂沟梁金矿冬季防冻通风系统。
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英文: Abstract: Satety charactcristics of the ventilation system in coal mine are analyzed.Indexes for the safety assessment of the ventilation system in coal mine are provided.Gradation of the safety degree for the ventilation system is also suggested.
中文: 文摘:分析了矿井(煤矿)通风系统的安全性，提出了评价矿井通风系统安全性的指标，确定了矿井通风系统安全性等级。
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英文: Adopted unique ventilation system and non-carbonate direct current motor stabilize the hot airflow.
中文: 采用独特的导风系统及无碳刷直流电机,恒定预热风量。
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英文: Adopted unique ventilation system and rotational direct current motor stabilize the hot airflow.
中文: 采用独特的导风系统及旋转式直流电机,恒定预热风量。
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