オペレーションシステムです
operēshonshisutemudesu
1. Operation system.; Operating system.
Noun
#718221
1. Operation system.; Operating system.
1. system
1. operation
1. operation
1. systems
1. automatic lock
2. automatic door-locking system
1. geographic information system; GIS
1. filing system
1. System's; Of the system
1. In the system; Within the system