According to the difference of the using characters of building, the heat-supply system is divided into two categories: the continuous heating system and the intermittent heating system.
按建筑物使用的性质，供暖制度可分为两大类：连续供暖制度和间歇供暖制度。
A new wood vacuum dryer with a heat recovery system was designed and manufactured, Drying schcdules of convection heating in continuous vacuum condition was studied.
研制出一种带有热能回收装置的木材真空干燥系统，并探讨了对流加热连续真空干燥新工艺。
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