- dulled drilling bit
- сработанное буровое долото* * *• изношенное по вооружению буровое долото• сработанное буровое долото
Англо-русский словарь нефтегазовой промышленности. 2011.
dulled drilling bit
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Tool wear — describes the gradual failure of cutting tools due to regular operation. It is a term often associated with tipped tools, tool bits, or drill bits that are used with machine tools.Types of wear include: * flank wear in which the portion of the… … Wikipedia
