The study of robust flight control is important to improve the airplane performance and the flight quality.

飞机鲁棒控制的研究对于提高飞机性能，改善飞行品质具有重要的意义。

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The atmospheric turbulence is a kind of complicated disturbance, which influences flight quality and flight safety.

大气紊流是复杂的扰动形式，影响飞行品质、飞行安全。

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Data from flight records serve as important evidence for investigationg causes of accidents as well as for monitoring flight quality and functions of motors in an aircraft.

飞行记录资料是判明飞行事件原因，监控飞行操纵品质、发动机性能的重要依据。

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Jeff Chelsky, a World Bank senior economist,says investors are avoiding higher risk debt in a flight to quality.

VOA: special.2009.03.13

Conversely, any dollar strength in 2012 is more likely to be a flight to quality.

FORBES: 2012 Outlook: Economic Slowdown Could Pinch Demand For Some Commodities

Mr. Hong: The bonds of safe-haven markets will benefit from flight to quality inflows.

WSJ: Pimco's Guiding Asia-Pacific's Investor Evolution: Ki Myung Hong

Turbulent and uncertain markets often elicit a flight to quality stocks and to sectors less likely to be affected.

FORBES: Side Effects May Include