permafrost meaning in English
n.
【地质学；地理学】永久冻土。
Examples
- This is the vegetational climate of arctic permafrost regions .
这是北极永冻地区的植物气候。 - Perhaps this is caused by the sudden melting of subsurface permafrost .
可能是地下永久冻土突然融化所造成。 - The harder the material under the permafrost is, the larger the chamber charge required .
永冻层之下的土壤越硬，所需要的药室装药量也越大。 - In permafrost areas in the soviet union or canada or alaska, ice has been used effectively for walling and roofing .
在苏联、加拿大或阿拉斯加的永久冻土地区，冰一直很有效地用来做墙和屋顶。 - Heat - bar construction technique on permafrost areas
多年冻土地区热棒施工技术