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ALARM OF CRITICAL THAWING DEPTH OF FROZEN SOIL
ALARM OF CRITICAL THAWING DEPTH OF FROZEN SOIL
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机译:冻土临界解冻深度报警
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摘要
the invention относитс to construction and operation of facilities in the услови х permafrost.purpose изобретени вл етс reducing labour intensity and повьинение accuracy измерени оттаивани мерзл
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