岩心样品
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borehole samples 钻孔试样...
test borehole soil samples 探井土样
Once the probe has been hauled up, a coring device will be lowered down the borehole to take samples of the lake floor sediment.
探头拖上来后，会把一个除芯机放到钻孔里，采集湖底淤积物的样本。
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