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rotary drilling
coal.	Rotarybohren n; Rotary-Bohren m
construct.	Rotationsbohren n; Rotorbohren n; Rotary-Verfahren m; Drehspülbohren n
industr.	Drehbohren n
mining.	Rotarybohrverfahren n; drehendes Bohren; Drehbohrverfahren n

rotary drilling: 35 phrases in 5 subjects

Construction	9
General	2
Mechanic engineering	3
Metallurgy	2
Mining	19