英语词汇“permafrost drilling”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	permafrost drilling
释义	permafrost drilling permafrost drilling [′pər·mə‚frȯst ′dril·iŋ] (engineering) Boreholes drilled in subsoil and rocks in which the contained water is permanently frozen.
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