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to phrases
spiral bit
stresses
mech.eng., obs.
спиральная перка
O&G
спиральное долото
;
спиральное буровое долото
(
MichaelBurov
)
tools
спиральная фреза
(
Скоробогатов
)
spiral bit:
7 phrases
in 3 subjects
Geology
1
Oil and gas
5
Oilfields
1
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