?混凝土包壳
... foam encasement 泡沫塑料外套 concrete encasement 混凝土包壳 encasement method 装箱方式 ...
"Until we excavate everything around the concrete encasement we can't say definitively that it hasn't leaked out into the soil, " she said.
WSJ: BP to Cut Oil Production on Alaska's North Slope
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