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| English thesaurus | |||
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| R | |||
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| A magnetic bearing from a VHF omnidirectional range VOR, tactical air navigation aid TACAN, or VORTAC facility, except for facilities in the Northern Domestic Airspace NDA, which may be oriented on true or grid north | |||
| rd | |||
| Radial: 11 phrases in 3 subjects |
| Medical | 1 |
| Microsoft | 9 |
| Technology | 1 |