percussion drilling /SCIENCE/
[DE] Stossbohrung; stossende Bohrung
[EN] percussion drilling
[FR] sondage à percussion
churn drilling,percussion drilling /ENERGY-MINING/
[DE] Hammerbohrung; Schlagbohren; Stoßbohren; schlagendes Bohren
[EN] churn drilling; percussion drilling
[FR] forage au battage; forage par percussion; forage à percussion; forer par battage; forer par percussion