英语词汇permanent frozen layer是什么意思，permanent frozen layer的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典

单词	permanent frozen layer
释义	permanent frozen layer　永冻层
随便看	oligonatality oligonecrospermia Oligoneoptera oligonite oligonitrophilic oligonucleotide oligonucleotide oligopeptide oligophagous oligophosphaturia oligophrenia oligoplasmatic oligoplasmia oligoplastic oligopnea oligopod oligopod phase oligopolist oligopolist oligopolistic competition oligopolistic economy oligopolistic markets oligopoly one section one section

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