Second, a frost must be present (ideally for several days in a row), with the temperature ranging somewhere between -13 and -8 degrees Celsius (or about 8.6 and 17.6 degrees Fahrenheit).
第二，要处于结霜的状态(理想的是连续几天持续这状态)，温度大概处于- 13到- 8摄氏度。
Disasters from low temperature, frost and snow made a total direct economic loss of 159.5 billion yuan with a death roll of 162.
全年低温冷冻和雪灾造成直接经济损失1595亿元，死亡162人。
The influence of different covered depths, thickness of frozen wall, excavating radius, original water content and brine temperature on frost displacement are discussed for horizontal freezing model.
探讨了在水平冻结情况下覆盖厚度（埋深）、冻土壁厚度、开挖半径、含水量和盐水温度对冻胀位移的影响。
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