permafrost table

基本解釋

The thermal offset and permafrost table temperature are important energy indexes in studying permafrost active layers and frost soil environment.
溫度位移和多年凍土頂板溫度是活動(dòng)層研究和凍土環(huán)境研究中重要的能量指標(biāo)。
The closed ballast layer can raise permafrost table, decrease annual mean ground temperature below the ballast layer, and protect the permafrost effectively.
封閉碎石道碴層可以提升凍土上限，降低多年凍土溫度，對(duì)下部多年凍土起到很好的保護(hù)作用。
Considering the effect on permafrost table, there is a kind of dynamic equivalence to some degree among pavement types, external temperature and embankment heights.
從對(duì)基底凍土上限影響的角度來看，路面類型、外部氣溫與路基高度三者間存在一定的動(dòng)態(tài)等效關(guān)系。