Similar to 西武551系電車

D101/102 Beijing–Harbin through train

D27/28 Beijing–Harbin through train

Douglas D-558-2 Skyrocket

Obice da 210/22

Cannone da 75/27 modello 06

Cannone da 75/27 modello 11

Cannone da 75/32 modello 37

Darwin Information Typing Architecture

Dasher (software)

Data Encryption Standard

German Equipment Works

Belyayev DB-LK

Dbx (noise reduction)

Douglas DC-1

DEC Alpha

DECnet

Der Deutsche Correspondent

Krauss-Maffei ML 4000