“road in permafrost region”的概念、定义、翻译、参考文献-科学参考

单词	road in permafrost region
释义	road in permafrost region Encyclopedia 工学〔特殊地区筑路〕释 road in permafrost region多年冻土地区道路在土温低于摄氏零度和具有地下冰的条件下，地下形成一层能持续多年保持冻结状态的土称多年冻土。
随便看	oriented oriented area oriented atlas oriented attachment oriented basis oriented bordism oriented boundary oriented bundle oriented cell oriented chain complex oriented circle oriented circuit oriented cobordant manifold oriented cobordism oriented cobordism class oriented cobordism group oriented cobordism theory oriented cohomology theory oriented complex oriented contour oriented curve oriented cycle oriented direction oriented distance oriented element

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