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问题:通过观察发现空气流过建筑结构会显著地影响水分聚集的速度。在“ASHRAEHandbook of Fundamentais”的1981年版第二十一章关于“在建筑结构中的水分”一文中有众多的依据及评述。但空气的运动方向随温度或水蒸汽压力梯度方向同向还是
Problem: Observing that air flow through building structures significantly affects the rate of water accumulation. In Chapter 21 of the 1981 edition of the “ASHRAE Handbook of Fundamentais”, there are numerous references and comments on “Water in Building Structures”. But the direction of air movement is in the same direction as temperature or water vapor pressure gradient.