The air used to dry grain in ventilated stores provides both the energy needed to evaporate the moisture from the grain and the medium to transport this moisture out of the store.

• 在装备有通风设备的粮库里，用于使谷物保持干燥的空气不仅提供了谷物中水分蒸发所需要的能量，而且还是将这些水分排出粮库的媒介。