Operating stability of valve
operating in all weathers operating
present operating cost and annual operating cost
A-stability absolute stability
flooded stability [= flooding stability]
stability and asymptotic stability of non-negative
stability indices for stability
stability of tailings dam stability
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