- spiral-grooved drill collar
- утяжеленная бурильная труба со спиральной канавкой
Большой англо-русский и русско-английский словарь. 2001.
spiral-grooved drill collar
Смотреть что такое "spiral-grooved drill collar" в других словарях:
Drill bit — For the fictional character, see Drill Bit (Transformers). For the cancelled skyscraper nicknamed Drill bit, see Chicago Spire. For the types used in drilling wells, see Well drilling. From top to bottom: Spade, lip and spur (brad point), masonry … Wikipedia
Lathe — A lathe (pronEng|ˈleɪð) is a machine tool which spins a block of material to perform various operations such as cutting, sanding, knurling, drilling, or deformation with tools that are applied to the workpiece to create an object which has… … Wikipedia
