| 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. |