“wall off”的概念、定义、翻译、参考文献-科学参考

单词	wall off
释义	wall off [`wȯl `ȯf] ^ENGINEERING To seal cracks or crevices in the wall of a borehole with cement, mud cake, compacted cuttings, or casing.
随便看	marginal checking marginal chlorosis marginal cost marginal dimensionality marginal escarpment marginal fissure marginally outer trapped surface marginal moraine marginal placentation marginal plain marginal plateau marginal probability marginal product marginal relay marginal revenue marginal salt pan marginal sea marginal sinus marginal test marginal thrust marginal ulcer marginal upthrust marginate margin line margin-notched card

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