“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	median median absolute deviation median age median citation age median control chart Median effective dose median effective dose median eminence median envelope median error median filter median lethal concentration median lethal concentration for fishery organisms median lethal dose median lethal dose (LD_{50}) median lethal dose, LD50 median line median magnitude median of a distribution median of a trapezoid median of a triangle median orbit median particle diameter median percentage method median period

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