What is the order of frost?

The phonetic sequence of "frost" is "s". "Frost" refers to tiny ice particles attached to the ground or plants, which are condensed when the water vapor near the ground cools below zero degrees Celsius. Something like frost; Describe white; Metaphor is noble and pure.

The "frost" of natural phenomena refers to the white ice crystals formed when the air near the ground is cooled below the frost point by the radiation of the ground and condenses on the ground or objects. Frost is a weather phenomenon, which belongs to ground meteorological observation in China. "Frost" usually appears from autumn to spring. Meteorology generally refers to the early frost in autumn as "first frost" or "first frost", and the final frost in spring as "late frost" or "final frost". The interval from the last frost to the first frost is a frost-free period.

Scientifically speaking, frost is made up of ice crystals, similar to dew. When the relative humidity in the air reaches 100%, water is separated from the air. The only difference between them is that the temperature of water vapor liquefaction and dew condensation is higher than freezing point, while the frost point (the temperature of water vapor condensation and frost formation) is lower than freezing point, so frost formation will only occur when the near-surface temperature is lower than 0℃. Frost, frost and first frost are not the same thing, but three different concepts. "Frost" refers to a white ice crystal formed by condensation of water vapor on the ground in cold weather; "Frost" refers to a common agricultural meteorological disaster phenomenon; The "first frost" solar term refers to the season that reflects the sudden drop of temperature, while the "first frost" does not mean "frosting", but refers to the cold weather.