Vibration of fixedair 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。
2
Polution expansion leads to the increasing demand for fixedair, water and land. It naturally follows that more and more people long for high living standard.
Two forced oxidation devices of flue gas desulfurization in power plants are introduced, including fixedair sparger(FAS) and agitator air lance assemblies(ALS).