水下[下水]滑道 under water launching way
残余永冻土 relict permafrost
干性永冻土 dry permafrost
永冻的 ever-frozen
永冻土 permafrost; eternal frozen ground; pergelisol; neve frozen soil; perennial frost
永冻土层面 permafrost table
永冻土带 permafrost
永冻土泥流 congelifluction
永冻土上的 supragelisol
永冻土上覆层 supragelisol
永久冻土下位水 subpermafrost water
冰冻的冻结的严寒的 Frozen
冻土冻胀试验 Frozen soil frost heave experiment
冻土水文 Hydrology in the permafrost and seasonal frozen regions; frozen soil hydrology
冻土水盐 water and salt of frozen earth
地面下的土壤 Undersoil
地下水水稻土 ground water paddy soil
地下水土 soil and groundwater
地下水土流失机理 mechanism of soil and water loss underground