 |
Engine Pressure | Ratio
| RATIO | |
| abbr. astronaut. | radiotelescope in orbit |
| abbr. avia. | radio telescope in orbit |
| abbr. el. | radiotelescope in orbit |
| abbr. space | radio telescope in-orbit |
| O&G | ratio set block |
| Ratio | |
| math. abbr. | R |
| ratio | |
| abbr. oil | ion |
| Engine: 13 phrases in 6 subjects |
| Abbreviation | 5 |
| Automobiles | 2 |
| Aviation | 2 |
| Military | 1 |
| Missiles | 2 |
| Software | 1 |