类别：
- CEP
- CMG
- COG
- CRPA
- CTS
- CTR
- CW
- DAC
- DB
- DLM
- DLR
- DLS
- DMA
- DME
- DoD
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- DT&E
- DTK
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- ECP
- EDM
- EFIS
- EM
- EMCON
- EPE
- ESGN
- ETE
- FDAU
- FDR
- FGCS
- FPL
- FRPA
- FSS
- GaAs
- GDOP
- GMDSS
- HAI
- HAMC
- HDOP
- HIS
- HV
- ICAO
- ICD
- ICS
- IFF
- IFR
- IFR
- ILS
- INMARSAT
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- ION
- IOT&E
- IP
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- KHz
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- LEP
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- M/S
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- MHz
- MaxCT
- MSA
- MSL
- MTBF
- NAVSTAR
- NBAA
- NDB
- NMEA
