オペレーションシステムであれば
operēshonshisutemudeareba
1. If it is an operating system; When it is an operating system
Noun
#2089620
1. If it is an operating system; When it is an operating system
1. system
1. operation
1. operation
1. wealthy; rich
1. systems
1. automatic lock
2. automatic door-locking system
1. geographic information system; GIS
1. filing system