permafrost 中文意思是什麼
permafrost
解釋
n. 名詞 【地質學；地理學】永久凍土。-
This is the vegetational climate of arctic permafrost regions.
這是北極永凍地區的植物氣候。 -
Frost heaving analysis of corrugated pipe culvert without foundation in permafrost region
多年凍土地區無基波紋管涵洞凍脹分析 -
Perhaps this is caused by the sudden melting of subsurface permafrost.
可能是地下永久凍土突然融化所造成。 -
The harder the material under the permafrost is, the larger the chamber charge required.
永凍層之下的土壤越硬，所需要的藥室裝藥量也越大。 -
In permafrost areas in the soviet union or canada or alaska, ice has been used effectively for walling and roofing.
在蘇聯、加拿大或阿拉斯加的永久凍土地區，冰一直很有效地用來做墻和屋頂。 -
Heat - bar construction technique on permafrost areas
多年凍土地區熱棒施工技術 -
As permafrost gets warmer, it could become wetlands
永久凍土變得更加溫暖時，將變成濕地。 -
Stability of gas hydrate in permafrost
凍土帶天然氣水合物穩定性研究 -
Distribution and characteristic of permafrost of hei longjiang privince
黑龍江省多年凍土分佈特徵 -
Effect of temperature control on tunnel construction in permafrost
溫度場控制在多年凍土隧道施工中的作用 -
This was a challenge, because the permafrost is barely permanent
這是一大挑戰，因為這里的凍土並非永久不變。 -
( 1 ) modeling of numerical analysis of frozen soil ventiduct roadbed by ann ( 2 ) developing the ann optimization design system for ventiduct roadbed in permafrost area ( 3 ) defining of the sequel learning tactic of three layer bp network ( 4 ) improvement on bp arithmetic in ann module
（ 2 ）開發了凍土通風管路基優化設計神經網路分析軟體系統具有完整的前後處理、溫度場分析、設計方案優化等功能，能滿足工程應用的基本需要。還能夠作為數值分析子模塊，以標準com組件形式嵌入「青藏鐵路數字路基」 gis系統。 -
This article introduces the status quo of engineering and technology of foreign pipelines in permafrost regions, and puts forward the relative countermeasures for the construction of pipelines in the regions in allusion to the frost heaving and thaw settlement of country rock and soil along the pipeline route
摘要介紹了國內外凍土地區管道工程技術現狀，針對凍土地區管道沿線和周圍（巖）土的凍脹和融沉問題，提出了相應的對策。 -
Applying those engineering techniques, at present, the following results are obtained : the ground temperatures on the top and at the bottom of an embankment made of crushed rock are all lower than those of common embankment, so the crushed rock embankment is of great advantage of decreasing embankment temperature, and becomes an effective and initiative engineering measure to protect permafrost ; the crushed rock embankment can actively adjust the temperature difference between south slop and north slop, and mitigate the asymmetry of ground temperature ; the deformation of the crushed rock embankment is less than that of common embankment
通過以上的施工技術，取得了相應的階段性成果：片石路基片石層頂面、底面與路基基底位置處地溫分別低於普通路基相同位置處地溫，片石路基有利於降低路基地溫，是一種有效的主動保護多年凍土工程措施；片石路基在調節路基陰陽坡地溫起到了積極的作用，減輕了路基地溫不對稱性的發生；對比片石路基和普通路基的路基變形量，片石路基的變形量相對較小。 -
Permafrost : this talent will now correctly increase the movement slowing effect of frost armor instead of the attack speed slow
極寒冰霜：這個天賦將正確的作用於霜甲術的減慢移動效果而不是攻擊速度的效果。 -
Instead of building directly over permafrost, they chose to build some parts on high bridges
他們不在凍土上直接修築鐵路，而是選擇某些部份蓋在高架橋上。 -
A soil is classified as histosols if it does not have permafrost and is dominated by organic soil materials
如果某種土壤沒有永凍層而又以有機物質為主則可以將其劃分為有機土。 -
The polar ice caps are made of frozen water and carbon dioxide, and water may be frozen in the ground as permafrost
極地冰帽是由固態水和二氧化碳組成的，水也有可能存在於永久凍土之中。 -
In alaska, salmon populations are faltering as melting permafrost pours mud into rivers, burying the gravel the fish need for spawning
在阿拉斯加， ?魚群的數量正在逐漸減少，因為永久凍土層融化帶入大量的泥土到河中，覆蓋了?魚產卵所需的碎石。 -
A recent study suggests, however, that permafrost ices below the surface of mars may have altered the effects of impact on it
但是，近來的研究表明，火星土層表面下的永久凍結冰可能改變了這種沖擊效應。
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