automatic speed changing system
outpatient dosage system
outpatient charging system
outpatient charge system
outpatient appoint system
OUTOMATIC CHACKING SYSTEM
outlet controlled cooling system
outpatient management information system
outlay management system
Outer-wall External Thermal Insulation System
outermost sphere system of earth
outer space cell living system
outer protective system
outdoor power supply system
outpatient queuing system