也就是说,在同等油耗下,汽车做的有效功越多则越好。
That is to say, in the same fuel consumption, the car to do more effective work, the better.
为了提高大型通风机设计计算的准确性,必须对有效功等计算进行修正。
In order to improve calculation accuracy, factors such as effective power have to be corrected for calculation in design of a large ventilator due to higher impeller peripheral velocity.
激光的发明给科学家们提供了一种强大的光源,同时也是地球上的一种能够产生有效功的推力。
The invention of the laser provided scientists with a stronger source of light and a push that could do useful work on Earth.
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