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
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。
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
The warm oil will produce thawing of ice rich soil adjacent to the pipeline when it crosses through permafrost zone, resulting in thaw settlement of the pipeline and variation of soil properties.
埋地热油管道通过永冻地带时，会导致土壤解冻，进而导致管道沉陷和土壤物性参数变化。
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。
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。
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。
Thermal analysis of artificially frozen wall in seasonal frozen area
季节冻土地区人工冻土墙的冻结特性研究
RESEARCH OF GROUND FROZEN DEPTH IN SEASONALLY FROZEN AREAS
季节性冻土地区土壤冻结深度的研究
Research on the Forming and Thawing of Frozen Soil Walls by Artificial Ground Freezing Method;
人工地层冻结冻土帷幕形成与解冻规律研究
Research on the Influence of Frost Heave of Frozen Soil to Derrick Footing in Freezing Sinking Shaft;
冻结法凿井冻土冻胀对井架基础影响的研究
Experimental Research on the Frost Heave Mechanism of Seasonal Frozen Soil and Upward Freezing Pulling Test of Near Water Foundation
季节性冻土冻胀机理与近水基础冻拔试验研究
On freeze damages of frozen soil to foundation and roadbed and treatment measures thereof
浅谈冻土对地基和路基的冻害及处理
Subgrade frost heaving treatment measure research in seasonal frozen soil area
季节性冻土区路基冻胀处理措施研究
Field Measurement Analysis of Natural Thawing and Artificial Thawing of Frozen Soil by Artificial Ground Freezing
人工地层冻结冻土自然解冻与强制解冻实测分析
This is the vegetational climate of arctic permafrost regions.
这是北极永冻地区的植物气候。
Division of Avoiding Loquat Freeze Injury in Yongtai Mountain Area Fujian Province Based on GIS
基于GIS的福建永泰山区枇杷避冻区划