早期的喷气式发动机进气口狭窄且噪音巨大但是随着前部风扇直径的增大发动机变得越来越安静。
Early jet engines had narrow inlets and were very noisy, but as the diameter of the fans at the front increased, the engines became quieter.
相反地，诱导式发动机可以自冷却，这样就省去了笨重的散热片、冷却风扇、水泵和与此相关的铅用品制造。
An induction motor, by contrast, can be cooled passively-and thereby dispense with the hefty radiator, cooling fan, water pump and associated plumbing.
联合技术公司在今年曾遭遇过多次打击，包括庞巴迪c系列的齿轮传动式涡轮风扇发动机原型起火，还有F - 35联合攻击战斗机的引擎爆炸。
United Technologies has suffered a few setbacks this year, including a fire in the prototype for the geared turbofan on the Bombardier C-Series and an engine blowout on the F-35 Joint Strike Fighter.
本文介绍了形状记忆弹簧中央驱动式风扇离合器装于发动机的试验结果。
The test results on the centre actuated fan clutch with the shape memory spring set on the engine are presented.
本文介绍了形状记忆弹簧中央驱动式风扇离合器装于发动机的试验结果。
The test results on the centre actuated fan clutch with the shape memory spring set on the engine are presented.
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