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| эхо-сигнал от дефекта | |||
| сигнал, отражённый от дефекта в материале | |||
| отражённый от дефекта сигнал (при ультразвуковой дефектоскопии, напр., труб) | |||
| flaw echo: 1 phrase in 1 subject |
| Oil / petroleum | 1 |
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