A sonic boom is the thunder-like noise a person on the ground hears when an aircraft or other type of aerospace vehicle flies overhead faster than the speed of sound or supersonic.

音爆是当飞机或其它类型的飞行器以超音速飞过头顶时，地面上的人听到的类似雷声的噪音。

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Researchers from Cambridge University and graduate trainees from Rolls-Royce are currently working together in a quest to explore possible future designs for a completely new type of aircraft engine.

这项独特的工程耗时三年，聚集了剑桥大学和麻省理工大学的研究人员以及行业内的参与者，将设计一种新型的客运飞机。 这种飞机的噪声将比现有飞机的明显的小。

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Can I specify the aircraft I want to fly on by aircraft type? Or just a general category?

我是否能确定我将使用的飞机机型？还是仅为一个通用级别？ %。

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The FAA issues ADs when it discovers a potentially unsafe condition on a type of aircraft, and it wants airlines to inspect their fleets or conduct preventive maintenance.

CNN: US Airways, United face FAA fines for safety violations

China is also developing its own 737 type of aircraft and is also considering a 747 type.

FORBES: Characteristics Of The New China

The app also has information on whether Wi-Fi is available on a flight and what the aircraft type is.

WSJ: To Take the Hassle Out of Traveling, Pack These Apps