オペレーションリサーチでしょう
operēshonrisāchideshō
1. Probably operations research.
Noun
#2963595
1. Probably operations research.
1. operation
1. research
1. operation
1. it seems; I think
2. right?; don't you agree?
1. Research; Of research
1. research with; by researching
1. In operation; With operation
1. Operation.; It is an operation.
1. Operational; Of operation