“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	direct sports population direct stationary direct steaming machine for cocoon direct subgroup direct subsidies to grain farmers direct subsidy for grain production direct succession direct successor direct sum direct sum decomposition direct sum group direct summand direct sum module direct sum of groups direct sum of ideals direct sum of modules direct sum of objects direct sum of representations direct sum of rings direct sum of sets direct sum of sheaves direct sum of subspaces direct sum representation direct-sum set direct-sum space

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