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permafrost drilling
meaning in Chinese
永冻层钻井
Related Words
permafrost
permafrost limit
supersaturated permafrost
permafrost subgrade
marginal permafrost
permafrost soil
epigenetic permafrost
layered permafrost
alpine permafrost
relict permafrost
permafrost caverns
permafrost degradation
permafrost dynamics
permafrost ecosystems
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