ドラム記憶 きおく装置 そうちでしょう
doramukiokusōchideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of ドラム記憶装置

1. Drum memory device, probably.; It will likely be a drum memory device.

Polite
Presumptive
Conjecture
Computing