They are of the hygroscopic type, able to recover winter moisture from the exhaust air and thus reduce the load on the supply air humidifiers.是什么意思_They are of the hygroscopic type, able to recover winter moisture from the exhaust air and thus reduce the load on the supply air humidifiers.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句