除非你在空气动力学实验室工作，否则没有人知道汽车在空气的阻力下行驶时，75英里的时速比65英里要多消耗多少能量，事实是这个差距非常大。
Unless you work in an aerodynamic lab, you don't understand how much more energy it takes to push a car through the air at 75 MPH than at 65 MPH, but it's huge.
通过对MB503型木工平刨床进行试验模态和空气动力学的分析，确定了木工平刨床的主要噪声源，并进行了实验验证。
Through the analysis of experimental model and air dynamic of type MB503 wood surface planer, and chief noise source was fixed, and was verified by the experiment.
牌的实验用车彻底追求适应空气动力学特点的造型。
Oldsmobile has made every ef fort to adapt itself to the peculiarity of aerodynamics. Oldsmobile.
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