| 单词 | humidity |
| 释义 | humidity The concentration of water vapour in the atmosphere. The absolute humidity is the mass of water vapour per unit volume of air, usually expressed in kg m-3. A useful measure is the relative humidity , the ratio, expressed as a percentage, of the moisture in the air to the moisture it would contain if it were saturated at the same temperature and pressure. The specific humidity is also sometimes used: this is the mass of water vapour in the atmosphere per unit mass of air |
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