Similar to 三国山_(神奈川県・山梨県・静岡県)

Darwin Information Typing Architecture

Dasher (software)

Data Encryption Standard

German Equipment Works

Belyayev DB-LK

Dbx (noise reduction)

Douglas DC-1

Douglas DC-4E

Douglas DC-7

JNR Class DE10

DEC Alpha

DECnet

Mount Azami

Mount Eniwa

Mount Ōgi

Mount Ōkueyama

Mount Ōdaigahara

Mount Odake (Tokyo)

Mount Ōmine

Ok (volcano)