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| diameter to thickness ratio | |||
| D to t ratio (коэффициент); diameter to thickness ratio (коэффициент); D/t | |||
| отношение диаметра к толщине стенки трубы: 14 phrases in 5 subjects |
| Gold mining | 1 |
| Oil / petroleum | 5 |
| Oil and gas technology | 2 |
| Pipelines | 4 |
| Technology | 2 |