- four-wing churn drill bit
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крестообразное ударное буровое долото
Англо-русский словарь технических терминов. 2005.
four-wing churn drill bit
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List of Kururu's inventions — Many of the storylines in both the manga and the anime versions of Sgt. Frog happen thanks to Sgt. Major Kururu s knack for inventing. His twisted nature combined with Keroro s need to conquer Pokopen/Pekopon work fluidly together, as it gives… … Wikipedia
