From Wikipedia, the free encyclopedia
濕度一般喺氣象學係指空氣濕度，淨係空氣中水蒸氣嘅含量。空氣中液態或固態嘅水唔計喺濕度裏面。唔含水蒸氣嘅空氣叫做乾空氣。由於大氣中嘅水蒸氣可以佔空氣體積 0% - 4%，一般列出空氣中各種氣體嘅成份時，係乾空氣中呢啲氣體所佔嘅成份。
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