查询词典 permafrost

On that basis,the primary features of spatial distribution of the forest line in China and its relations with the permafrost limits and climatic snowline are discussed.

在此基础上研究了我国森林线的空间分布特征及其与多年冻土线、气候雪线的关系。

In this paper,based mainly on the heights above sea level of the upper limits of the modern dark coniferous forest zones in some mountainous regions and the climatic data obtained from 102 meteorological stations in China,the theoretic altitude of the forest line has been calculated and maps showing the altitude isolines of the forest line,the isolines of height differences between the permafrost limits and the forest line and the isolines of height differences between the modern climatic snowline and the forest line in China have been constructed respectively.

本文主要根据我国一些地区现代暗针叶林带上限的海拔高程和102个气象台站的气象资料，计算出我国的森林线的理论海拔高度，并编绘出我国的森林线高程等值线图以及多年冻土线与森林线高差等值线图和现代气候雪线与森林线高差等值线图。

Key words:Tibet Plateau; permafrost regions; subgrade; bridge; pile foundation

关键词］青藏高原；多年冻土地区；路基；桥梁；桩基础

Migrating pingos formed along fault zone in permafrost north Tibetan Plateau,destructing bridge,culvert and oil pipeline.

青藏高原北部常年冻土区断裂破碎带发育的移动冰丘对桥梁、涵洞、输油管道等工程设施具有不同形式的破坏作用。

Three dimensional numerical modeling on migrating pingo destructing bridge pier can provide important factors for designing bridge and protecting geological hazard in permafrost.

移动冰丘导致桥墩变形破坏的三维有限元数值模拟能够为常年冻土区桥梁工程设计和地质灾害防治提供力学参数和科学依据。

Descending almost 500 feet under the permafrost, the entrance tunnel to the seed vault is designed to withstand bomb blasts and earthquakes.

通往种子地库的入口隧道，位于永冻带下约 500 英尺处，其设计旨在防御爆炸和地震。

In permafrost region, most of the rainfall is always freezing in the ground or used to supplement the deficit of soil moisture and don't product runoff directly, there's only a better correlation on runoff at spring and summer flood.

多年冻土区降水大部分冻结在土壤中或者用来补充土壤水分的亏缺，不能直接产流，只有在春汛和夏汛期间与径流保持较好的相关关系。

To date, mankind has in the worldwide sea, slope, land and trenches, as well as the Arctic region, Siberia region and the Qinghai-Tibet Plateau permafrost zones found in a huge volume of gas hydrates.

迄今，人类已经在世界范围内的海底、陆坡、陆基和海沟，以及北极地区、西伯利亚地区和青藏高原的永久冻土区中发现了巨大体积的天然气水合物。

RBI Grade 81 stabilized layers have been proven to be very durable and wear resistant, and meets the standards required by the Norwegian Public Roads Administration to resist extreme climate and permafrost conditions, and thus the goal of being able to modify a gravel/dirt road to function much like a tar road in all weather conditions can be achieved at a fraction of the conventional cost.

使用RBI 81级产品稳定的基层已被证明具有非常持久、耐磨的特点，满足挪威公路管理局要求的承受极端气候和冻土条件的标准，因而可实现将砾石/泥土道路改造为和沥青道路一样可在任何气候条件下使用的目标，而其成本仅为使用传统修筑方式的一小部分。

The key issues in the engineering stability of oil pipelines are frost heave and subsequent thaw settlement in permafrost foundations.

阿拉斯加输油管道工程取得成功的原因在于充足的科研投入、讨论和决策时间，以及最终采用的一系列创新设计来保护多年冻土和抑制融沉。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。