Baker cement float shoe

башмачная насадка Беккера с обратным клапаном (корпус насадки цементный, шаровой клапан и его гнездо бакелитовые, насадка легко разбуривается).

Англо-русский терминологический словарь по геологопоисковому бурению. - Л.: Гостоптехиздат, Ленинградское отделение . . 1963.

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  • United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …   Universalium

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