オペレーションリサーチであれば
operēshonrisāchideareba
1. If operation research; When operation research
Noun
#2963595
1. If operation research; When operation research
1. operation
1. research
1. operation
1. wealthy; rich
1. There; Behold
1. Was; Existed
1. To be (exists); To have
1. Does not exist; Is not present