However, it only reads and controls the dew-point temperature of air instead of the relative humidity which is known to be more important in industry, agriculture, food storage and hygiene.

但它通常只读出和控制空气的露点，而在工业、农业、冷藏和卫生学上重要的却是空气的相对湿度。

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There are some influential aspects of keeping the quality in the storage process, including the temperature, relative humidity, air velocity, gas component, package and transportation.

这是因为，在相同体积的空气中，水蒸汽的含量不变，则温度越高，相对湿度就越小。

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