advanced life support system
airing system of life boat
biological ecological closed-loop life support system
bioregenerative life support system
bioregenerative life support system BLSS
controlled ecological life support system
controlled ecological life support system CELSS
controlled ecological life-support system
environment control and life support system ECLSS
Environmental control and life support system
fatigue life predicting system
grid-wide life-cycle integrated optimization system
Institute RD Life Cycle Management System
life boat with a self-contained air support system
Life Cycle Asset Management LCAM criterion system