室内空气如果干燥，就去买一台加湿器。
如果干燥机蒸发水分较多，就需要更多的排气风机。
If the drier is evaporating a lot of water, it will require more exhaust than if it evaporates little water.
如果干燥温度为单值，而不是一个范围，则在指定温度+/-2?。
Where the drying temperature is indicated by a single value rather than a range, drying is carried out at the prescribed temperature +/-2?
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