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。
The polar ice caps are made of frozen water and carbon dioxide, and water may be frozen in the ground as permafrost.
极地冰帽是由固态水和二氧化碳组成的，水也有可能存在于永久冻土之中。
A Improved Permanent Scatterers Method for Analysis of Deformation over Permafrost Regions of the Qinghai-Tibetan Plateau
青藏高原冻土形变监测的永久散射体方法研究
Permanently frozen subsoil, occurring throughout the Polar Regions and locally in perennially frigid areas.
永冻土永久冰冻的下层土壤，出现在整个北极地区和部分长期寒冷的地区
A recent study suggests, however, that permafrost ices below the surface of Mars may have altered the effects of impact on it.
但是，近来的研究表明，火星土层表面下的永久冻结冰可能改变了这种冲击效应。
New understanding of permafrost melt could soon alter global-climate models.
一项关于永冻土带融化的新的发现可能不久以后会改变全球的气候。
Because of the intense cold, the subsoil of the tundra remains permanently frozen to a great depth.
由于严寒，冻土带的底层土仍然长久冷冻得很深。
People with minor cases of frostbite that affect only the skin may not suffer any permanent damage.
只皮肤患轻微冻疮的人可能不会有永久性伤害。
Study on effective loads of ground motion for permanent deformation of soils
土体永久变形中地震动有效荷载研究
New, pent-up literary voices began to make themselves heard from beneath the thawing spring soil.
复苏的冻土下进发出压抑已久的文学的呼声。
Experimental Study on Frost Thawing Resistant Concrete for TGP
三峡大坝外部混凝土抗冻融耐久性试验研究
Experimental Study on Frost Resistance of Road Structure Cement Concrete;
道路工程水泥混凝土材料抗冻耐久性研究
Experimental Research on the Strength and Frost Resistance of Recycled Concrete;
再生混凝土力学性能和抗冻耐久性试验研究
Tests on Frost-resistance and Life-span Prediction of Recycled Concrete
再生混凝土抗冻耐久性试验及寿命预测
Experiment on frost resistance durability of air-entrained pumice lightweight aggregate concrete
引气浮石轻骨料混凝土抗冻耐久性的试验研究
Probe into Criterion of Concrete Anti-Freeze Durability with Bubble Parameter
用气泡参数判定混凝土抗冻耐久性的探讨
THE EXPERIMENT STUDY ON FROST RESISTANCE DURABILITY OF POLYPROPYLENE FIBER REINFORCED LIGHTWEIGHT AGGREGATE CONCRETE
聚丙烯纤维轻骨料混凝土抗冻耐久性试验研究
Durability for Marine Pre-stressed Structures with Freezing-Thawing Cycles
冻融循环下海工预应力混凝土结构的耐久性