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| оптический канал транспортной сети железнодорожной электросвязи (ROGER YOUNG) | |||
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| относительная высота пролёта препятствий (MichaelBurov) | |||
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| о! | |||
| ох!; ах! (выражает удивление, неодобрение, сожаление) | |||
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| Окс | |||
| English thesaurus | |||
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| overhead camshaft | |||
| Nacogdoches, Texas USA; obstacle clearance height (MichaelBurov) | |||
| obstacle clearance height (Leonid Dzhepko) | |||
| optical channel; outgoing channel | |||
| oral contraceptive hormone | |||
| option clearing house | |||
| octachlorocyclohexanone | |||
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| ocher; ochre | |||
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| Optical channel with full functionality | |||
| orchard | |||
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| Ontario Child Health Study | |||
| OCh: 2 phrases in 2 subjects |
| Irish | 1 |
| Telecommunications | 1 |