permafrost regions

常见例句

This is the vegetational climate of arctic permafrost regions.
这是北极永冻地区的植物气候。
There are 50 years history about subgrade construction technology and the relevant research in the permafrost regions.
目前，针对级配碎石力学性能研究较少，在多年冻土地区的应用研究还是空白。
In the past 30 years, the values of freeze-thaw intensity (FTI) exhibited an increasing trend, which indicates that the stability of frozen ground has changed to some extent in the permafrost regions.
近30年来高原地区冻融强度（FTI）呈现增大的趋势，这在某种程度上表明高原多年冻土区冻土的稳定性发生了变化；