accident operating rules
reservoir operating rules
operating in all weathers operating
present operating cost and annual operating cost
AR rules analysis rules
GT selection rules (=Gamow-Teller selection rules)
zero capital of operating
128-bit operating systems
16-bit operating system
1st grade clean operating room
32-bit operating systems
64-Bit Operating Systems
abdominal operating instruments set
abnormal operating cash flow
abnormal operating condition
Abnormal Operating State
abnormal operating transient
accident operating condition