永凍層 的英文怎麼說
中文拼音 [yǒngdòngcéng]
永凍層
英文
congelisol-
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。Permanently frozen subsoil, occurring throughout the polar regions and locally in perennially frigid areas
永凍土永久冰凍的下層土壤，出現在整個北極地區和部分長期寒冷的地區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。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。There are three main genetic types : ( 1 ) biogas generated in high - latitude and low - temperature permafrost zone : ( 2 ) biogas generated in high salinity environment in high elevation ; ( 3 ) biogas in shallow pay generated in recent sediment
其主要成因類型有3種：高緯度低溫，永久凍土帶下形成生物氣；高海拔、高鹽度環境下形成生物氣；現代沉積物形成淺層生物氣。Standard test method for individual piles in permafrost under static axial compressive load
靜態軸向壓縮加載下永凍層中各個疊層的標準試驗方法Their bodies had since been buried in permafrost, and the 1951 expedition members hoped to find the 1918 virus preserved in the victims ' lungs
死者的屍體一直埋在永凍層中， 1951年的遠征隊希望能找到保存在死者肺部組織的病毒。Engineers designed bridges to span the most treacherous area of permafrost and sank naturally cooled piping into the ground to keep the track bed frozen year - round, reducing instability
中國鐵路建設者們在永凍土地段設計了橋梁，堅固的水泥橋墩深深地埋在永凍土層里，克服了路基不穩定的難題。About half of the route is across permafrost, which poses particular challenges because of the danger of subsidence caused by melting at the surface in summer
路線的大半是要穿過永凍土，由於存在夏季土層表面融化而導致的下沉危險，這便給運營帶來了特殊的挑戰。分享友人