... reduced efficiency；降低效率 reduced engine efficiency；降低发动机效率 reduced engine life；降低发动机寿命 ...
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将发动机置入机身上部也能够提高燃油效率和降低噪声。
Gains in fuel efficiency and noise reduction could also come from embedding the engines into the topside of the fuselage.
它有一个积极的4.07：1第一齿轮比，提供强大的发射，而且还提供高过载率的降低发动机转速，并提供更好的燃油效率。
It has an aggressive 4.07:1 first gear ratio that delivers strong launches, but also provides tall overdrive ratios that decrease engine RPM and provide better fuel efficiency.
该方案充分利用超级电容的特性，能够使发动机工作在高效率点，降低发动机油耗。
The program takes full advantage of the characteristics of ultra capacitor, so the engine can work at high efficiency, the lower engine oil consumption.
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