air track rail

air-track

air-track drill

cold air track

semi-track air-cushion vehicle

air cushion track

air air heat exchanger

air-air data transmission

air-air heat exchanger

air-air intercooler

air-air Missile

air-air missile fire

all-air air conditioning system

plate-type air-air heat exchanger

SA of air air missile

wheel air-air enthalpy exchanger

engineering district；maintenance of way section；track division；track district；track maintenance division

advanced long-range air-to-air missile (ALRAAM)

advanced medium-range air-to-air missile (AMRAAM)