base of permafrost的意思|示意
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多年冻土基底
base of permafrost的网络常见释义
永冻土底 ... 永冻土层面 permafrost table 永冻土底 base of permafrost 永冻土孤岛 permafrost island ...
base of permafrost相关例句
The interlayers that characterized as harden in middle and incompact in top and below widely occurred in the cement-stabilized-gravel when contrustruing the base course of pavement in permafrost area.
多年冻土地区路面水泥稳定砂砾基层应用中，普遍存在基层上下松散、中部板结的“夹层”现象。