n. aquiclude
misc. waterproof layer
在近代工程中，筑围堰时一般先打下钢板桩以形成阻水层。
Cofferdams are made by driving metal sheet piling into the Bed to form a watertight fence.
盐水泥浆侵入时，水层电阻率降低较小而油层电阻率大为降低，因此形成低阻油层。
When salty mud intrudes into the layer, the reduction of water layer is small, but the reduction of oil layer is great. This will form a low resistivity oil layer.
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