To ensure the tunnel face stability in construction, the mud fluid properties must be obtained scientifically.

为保证施工过程中隧道开挖面的稳定，必须科学确定盾构泥浆特性参数。

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The quality of mud fluid is key to the drilling in complex strata.

复杂地层钻进，泥浆质量是关键。

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Liquid media: water, acid, alkali, mud fluid, paper pulp, dyestuff, oil, milk, alcohol, drinking. etc.

液体介质：水、酸、碱、泥浆、纸浆、染料、油类、牛奶、酒类、饮料等。

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Drilling engineers use tons of a thick fluid called drilling mud to lubricate drill bits as they chew through rock.

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Halliburton said that the report "accurately places responsibility on BP as the well owner for its operational decisions, " which included using a heavy fluid designed to keep gas from entering the well, called drilling mud, that was "too light" and probably mixed with the cement at the bottom of the well, and drilling too narrow a well.

WSJ: Final Oil-Spill Report Chastises BP, Others