“frost line”的概念、定义、翻译、参考文献-科学参考

单词	frost line
释义	frost line [`frȯst ´līn] ^GEOLOGY 1. The maximum depth of frozen ground during the winter. 2. The lower limit of the permafrost. ^MATERIALS In polyethylene film extrusion, a ring-shaped area with a frosty appearance at the point where the film reaches its final diameter.
随便看	long-distance loop long-distance navigation long-distance xerography longeron long-flame burner long-haul carrier system long-haul radio long hole long-hole drill long-hole jetting long hundredweight Longhurst-Hardy plankton sampler longicollous Longidorinae long ink long interspersed nucleotide element Longipennes longitude longitude factor longitude line longitude method longitude signal longitudinal longitudinal aberration longitudinal acceleration

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