Heat was obtained from decomposing manures and hot air flues.

靠肥料分解和烟道为植物提供热量.

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Remove sediment from heaters, flues and motors before using them.

在使用暖气, 烟道,和马达之前,应清理沉积物.

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Cut openings in sheets for outlets, vent pipes, flues, etc. to the minimum size necessary.

削减开口,为产品的店铺时, 排气管, 烟道等,以最小面积必要的.

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Also covered are forced air heating, heat pumps, automatic control thermostats, flues and sound and vibration.

此外盖住是被被迫的空气加热, 热帮浦, 自动控制恒温器, 烟道和声音和振动.

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