main engine control

engine capacity / engine power, engine output

main defense area (line) / main defensive position

main tank/ main fuel tank

main gear box / main rotor transmission

main rotor transmission / main gear box

main-rotor head / main-rotor hub

main-rotor hub / main-rotor head

reaction engine / motor (jet engine)

rotary engine (Wankel engine)

engine ground run / engine test

engine oil reservoir / engine oil tank

airbreathing jet engine / ducted jet engine

main control room

AWIFM (A—Adequate FA support; W—Weight the main effort; I—Immediately available; F—Facilitate future operations; M—Maximum feasible centralized control)

main-rotor collective pitch control rod

engine control stand

engine acceleration control

full authority digital engine control (FADEC)

separate engine throttle control lever

engine control panel

fluid amplifier control engine test program

direction of the main blow

main (fighting) force(s)

Main Air Traffic Flow Management Centre (MATFMC)

Main Armaments Directorate of the RF Armed Forces

main attack

main ballast tank

main base

main battery

main battle area (MBA)

main battle force

main battle tank (MBT)