A line used as both sterile and maintaining line
agonic line {agonic line of no declination}
Dual purpose line with nucleic male sterile line
Fault Cutoff Line Allan Line
Male sterility line and maintainer line
velocity line of arc line short band
3G mo bile communications systems
3G mobile communications
3G mobile communications system
4G communications network
ACDS: APEC Communications and Database System
acoustic communications
ACSadvanced communications service
ACSEuropean advanced communications technologies and services
active transducerEuropean advanced communications technologies and services
activity based simulationEuropean advanced communications technologies and services
activity factorEuropean advanced communications technologies and services
ACTSadvanced communications technology satellite