单词 | sludger |
释义 | sludger|ˈslʌdʒə(r)| [f. sludge v.] An appliance for removing the sludge from a bore-hole, or for boring in quicksand.
1839Ure Dict. Arts 966 The sludger, for bringing up the mud. 1851Greenwell Coal-trade Terms Northumb. & Durham 9 Sludgers..are used when a bore-hole is so wet that the borings would..be washed out of the cylinder. 1871W. Morgans Mining Tools 134 A sludger which is fitted with an inside piston..in order to suck the sludge into the cylinder. |

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