| Acronym | Meaning |
 | CAAC | Civil Aviation Administration Of China |
| VHF | Very High Frequency |
| SMA | Segnalamento Marittimo Ed Aereo |
| SSS | Safety And Site Services |
| SDS | Solar Disk Sextant |
| ALT | Altimeter |
| AMAX | American Metals Climax |
| SERI | Solar Energy Research Institute |
| IDNHR | International Decade Of Natural Hazard Reduction |
| ACACIA | A Consortium For The Application Of Climate Impact Assessments |
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