We measure the bare engine noise, then rank which particular areas of the engine are producing the highest levels of noise.
我们衡量裸发动机噪音，然后排名特定地区的发动机生产最高水平的噪音。
This is a beautifully restored aircraft, and it must take many hours of hard work to keep the bare aluminum this shiny - you can even see the engine and the airshow grounds reflected on the fuselage!
这是一个精心修复飞机，它必须采取许多小时的艰苦工作，以保持光泽裸铝本-您甚至可以看到引擎和航展理由反映在机身！
This is a beautifully restored aircraft, and it must take many hours of hard work to keep the bare aluminum this shiny - you can even see the engine and the airshow grounds reflected on the fuselage!
这是一个精心修复飞机，它必须采取许多小时的艰苦工作，以保持光泽裸铝本-您甚至可以看到引擎和航展理由反映在机身！
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