Similar to 一式機動四十七粍速射砲

British C-class submarine

D-10 tank gun

Douglas D-558-1 Skystreak

Lockheed D-21

D101/102 Beijing–Harbin through train

D27/28 Beijing–Harbin through train

Douglas D-558-2 Skyrocket

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

Der Deutsche Correspondent

DF-31

DFS 228

QF 3-pounder Hotchkiss