原因：当室外湿度大的时候，室内机制热，室外机冷凝器表面会结霜，这样会影制热效率。
Reason: when the humidity outdoor, indoor, outdoor heating surface of the condenser will, this will be the frost of heating efficiency.
这些系统，在妥善设计和安装，可提供室外的温度冷却到40摄氏度，几乎没有相对湿度明显增加。
These systems, when properly designed and installed, can provide cooling of outdoor temperatures by up to 40 degrees Fahrenheit with virtually no noticeable increase in the relative humidity.
将室外的温度、湿度、风力和和风向等数据输入电脑。
Data on outdoor temperature, humidity, as well as wind speed and direction were transmitted to the computer.
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