Radiation frost occurs on clear nights with little or no wind when the outgoing radiation is excessive and the air temperatures is not necessarily at the freezing point.是什么意思_Radiation frost occurs on clear nights with little or no wind when the outgoing radiation is excessive and the air temperatures is not necessarily at the freezing point.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句