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upper surface of permafrost
meaning in English
永冻层顶面
Related Words
permafrost
permafrost limit
supersaturated permafrost
permafrost subgrade
marginal permafrost
permafrost soil
epigenetic permafrost
layered permafrost
alpine permafrost
relict permafrost
upper surface grinding width
upper surface of feet
upper surface of rib
upper surface of the airfoil
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