Frost line

（重定向自Frostline）

The frost line—also known as frost depth or freezing depth—is most commonly the depth to which the groundwater in soil is expected to freeze. The frost depth depends on the climatic conditions of an area, the heat transfer properties of the soil and adjacent materials, and on nearby heat sources. For example, snow cover and asphalt insulate the ground and homes can heat the ground (see also heat island). The line varies by latitude, it is deeper closer to the poles. It ranges in the United States from about zero to six feet. Below that depth, the temperature varies, but is always above 0 °C (32 °F).

单词	frostline
释义	frostline /'frɔst,lain/ 英汉-汉英词典 n. 冰冻线,冻深线词组 \| 习惯用语您要查找的是不是： frostiness n. 酷寒,无情 costliness n. 高价,奢侈,昂贵 ghostliness n. 幽灵的；影子似的；朦胧的 frosting n. 霜状白糖；无光泽面；结霜；去光泽 v. 以霜覆盖；冻坏；起霜（frost的ing形式） frostline 霜线英语百科 Frost line （重定向自Frostline） The frost line—also known as frost depth or freezing depth—is most commonly the depth to which the groundwater in soil is expected to freeze. The frost depth depends on the climatic conditions of an area, the heat transfer properties of the soil and adjacent materials, and on nearby heat sources. For example, snow cover and asphalt insulate the ground and homes can heat the ground (see also heat island). The line varies by latitude, it is deeper closer to the poles. It ranges in the United States from about zero to six feet. Below that depth, the temperature varies, but is always above 0 °C (32 °F).
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frostline /'frɔst,lain/

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Frost line