“active permafrost”的概念、定义、翻译、参考文献-科学参考

单词	active permafrost
释义	active permafrost [`ak·tiv `pǝr·mǝ´frȯst] ^GEOLOGY Permanently frozen ground (permafrost) which, after thawing by artificial or unusual natural means, reverts to permafrost under normal climatic conditions.
随便看	barrel barrel arch barrel assembly barrel bolt barrel ceiling barrel chest barrel compressor barrel copper barrel distortion barrel drain barrel erosion barrel-etch reactor barrel extension barrel fitting barrelhead barreling barrel life barrel plating barrel printer barrel roof barrels per calendar day barrels per day barrels per month barrels per stream day barrel vault

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