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шарошечное долото stresses
construct.	drag bit; rotary bit; rolling-cutter bit
dril.	R (rock bit); insert bit (Yeldar Azanbayev); roller-cone bit (см. wikipedia.org AlexanderKayumov)
mining.	Hawthorne bit; reller bit; reller-type bit; rolling cutter; drag type bit; roller cone
O&G	cone rock bit; cone rock-bit; cone bit; rock bit; rock drill; roller-cutter bit (Yerkwantai)
O&G, geol.	cone cutter bit
O&G. tech.	rolling drilling bit
oil	roller bit; rolling cutter rock bit; cone-rock bit; hawthorn bit; rock-roller bit; toothed roller bit; true-rolling bit
tech.	rolling cutter bit

шарошечное долото: 156 phrases in 14 subjects

Bridge construction	2
Construction	1
Drilling	3
Geology	2
GOST	1
Makarov	2
Mining	1
Oil / petroleum	46
Oil and gas	31
Oil and gas technology	15
Oilfields	32
Sakhalin	1
Technology	18
Transport	1