Major improvements have been made to raise the engine efficiency.
已经采取了重大措施来提高发动机的效率。
Valve timing is a major factor in achieving good volumetric efficiency.
定时阀是实现高容积效率的一个主要因素。
One major challenge is to improve the efficiency of the oxygen reduction step in this experiment.
我们的主要挑战是提高试验中氧气还原反应的效率。
Improved cost efficiency ratio is a major factor considered in the development of trainer aircraft.
教练机研制过程中的一个主要考虑因素是提高效费比。
Effect of Temperature and Photon Flux Density in Autumn Greenhouse on Photosynthetic Efficiency of Some Major Vegetable Crops.
秋延迟大棚温光因子对几种主要蔬菜作物光合效率的影响
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