Vibration of fixed air refueling receptacles that can occur in flight causes serious hazards to the safety of flight.

飞机采用固定式空中受油装置后，可能引起飞机飞行过程中的振动，严重时危及飞机的飞行安全。

youdao

Two forced oxidation devices of flue gas desulfurization in power plants are introduced, including fixed air sparger(FAS) and agitator air lance assemblies(ALS).

介绍了两种不同的湿法脱硫强制氧化装置：固定式空气喷射器强制氧化装置和搅拌器、空气喷枪组合式强制氧化装置。

youdao

youdao

The report said the Airprox board had been of the opinion that the object was unlikely to have been a fixed wing aircraft, helicopter or hot air balloon, given that it had not shown up on radar.

BBC: Airliner 'had narrow miss with UFO'

Five grand in the flying world is three months of fixed costs before I ever get the plane in the air.

FORBES: California's Almond Upside Surprise

But once Korean Air figured out that their problem was cultural, they fixed it.

FORBES: The Dangers of ��Face��