- bull point drilling bit
- 1) Нефть: пирамидальное буровое долото2) Нефтегазовая техника пирамидальное долото
Универсальный англо-русский словарь. Академик.ру. 2011.
Универсальный англо-русский словарь. Академик.ру. 2011.
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