音标与读法

这里为大家介绍下permafrost 是什么意思，希望能帮助到各位朋友。

中英文翻译

n.

【地质学；地理学】永久冻土。

ground that is permanently frozen

In geology, permafrost or cryotic soil is soil at or below the freezing point of water for two or more years. Most permafrost is located in high latitudes (i.

例句与用法

1.This is the vegetational climate of arctic permafrost regions .

这是北极永冻地区的植物气候。

2.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。

3.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。

4.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。

5.Heat - bar construction technique on permafrost areas

多年冻土地区热棒施工技术

6.As permafrost gets warmer , it could become wetlands

永久冻土变得更加温暖时，将变成湿地。

7.Stability of gas hydrate in permafrost

冻土带天然气水合物稳定性研究

8.Distribution and characteristic of permafrost of hei longjiang privince

黑龙江省多年冻土分布特征

9.Effect of temperature control on tunnel construction in permafrost

温度场控制在多年冻土隧道施工中的作用

10.This was a challenge , because the permafrost is barely permanent

这是一大挑战，因为这里的冻土并非永久不变。

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