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Frostpoint temperature T f is the temperature at which the water vapour contained in a gas starts to form frost when cooled

霜點(diǎn)溫度是氣體中包含的 水蒸汽開始結(jié)霜時的溫度 or 或者

Frostpoint is defined as the temperature at which a moist gas is saturated with respect to a plane surface of pure ice

霜點(diǎn)是濕氣體達(dá)到飽和 狀態(tài)并在平面表面產(chǎn)生純冰時的溫度