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

单词	permafrost degradation
释义	permafrost degradation Encyclopedia 工学冰冻圈变化释 permafrost degradation冻土变化冻土指温度低于0℃并含有冰的土或岩层。全球不同地区冻土在面积、温度、活动层厚度等方面均有一定差异。
随便看	chromosome banding pattern chromosome breakage chromosome copy number abnormity disease chromosome doubling chromosome duplication chromosome elimination chromosome engineering chromosome interchange chromosome nondisjunction chromosome pairing chromosome rearrangement chromosome satellite chromosome set chromosome set manipulation chromosome structural variation，SV chromosome substitution chromosome theory of inheritance chromosome walking chromosomics chromosomology chromosphere chromosphere-corona transition region chromosphere-corona transition zone chromospheric ablation chromospheric activity

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