However, if you have clay soil, it's best to dig to frostdepth if greater than 24 in.
然而，如果您有粘土，那是最好的连接深度如果很大地比例在24寸。
2
The formula for computing frostdepth and frozen-heave factor is puted forword through statistical regression analysis.
经过统计回归分析，提出设计冻深与冻胀率的计算公式。
3
This essay then proceeds with an in-depth and comprehensive study of Frost with respect to the background for the formation of his poetic style and the uniqueness of his poems.