fuel injection system

fuel injection equipment

fuel injection pump camshaft

atropine injection

tetanus toxoid injection

air injection starter

airless injection diesel engine

block-type injection pump

direct injection

excess injection pressure

injection advance device

heat injection

injection advance

water injection

jet injection gun (hypodermic)

injection pump

Proton Exchange Membrane Fuel Cell (PEM fuel cell, PEMFC)

fire extinguishing system sprinkler system and fire alarm system

bulk fuel delivery system (BFDS)

fuel storage and distribution system

jerk-pump fuel system

fuel gravity system

fuel drainage system

fuel supply system

fuel system failure

fuel control system

fuel system hose

fuel system pipe

fuel system

merchant ship communication system (mercomm system)

multiple launch rocket system (MLRS); multiple rocket launcher system

Air Force weapons system / AF weapon system

attitude-and-heading reference system / attitude and heading reference system (AHRS)