Transaction Tracking System
TTS Target Tracking System
achromatic translation system
advanced public transportation system
air material transportation system
Airflow Transportation System
APTS advanced public transportation system
artificial transportation system
Ash Transportation System
automatic telephone translation system
bike transportation system
binary translation system
bunker transportation system
cAMP signal transduction system
cell-free translation system
central transportation system
centralized gathering-transportation system
Chinese-Japanese machine translation system
Chinese-Mongolian machine translation system