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| резьба NPSM (National Standard Free-Fitting Straight Mechanical Pipe Thread ivvi) | |||
| трубная цилиндрическая крепежная внутренняя резьба (из книги Климзо "Ремесло технического переводчика" YGA) | |||
| English thesaurus | |||
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| joints; national pipe straight thread for mechanical joints | |||
| national standard straight pipe threads for mechanical joints | |||
| American National Pipe Straight Mechanical Joint | |||