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расширитель буровых
 расширитель буровой
oil drilling reamer; hole opener
| скважин
 скважина
gen. chink; crack; aperture; peep; rift; interstice

to phrases
расширитель буровойstresses
oil drilling reamer; hole opener
расширитель буровых: 48 phrases in 11 subjects
Bridge construction2
Construction1
Drilling3
Geology1
Makarov1
Oil / petroleum7
Oil and gas3
Oil and gas technology11
Oilfields10
Technology8
Well control1