The relative speed between driving wheel and pin rail varies with sinusoidal function. 2 When the torque of driving wheel is unchanged, the traction force varies with the...
当驱动轮转矩不变时，牵引力随啮合点的变化而呈周期性变化。每个轮齿受到的销轨反力是脉动的，脉动幅值较大。
The results show that the sandwich composite beam improves the dynamic critical compression of the simple composite beam and the dynamic critical force varies with the frequency of the excitation.
结果表明夹层复合梁大大提高了简单复合梁的临界力，但它也随激励频率而变化。
Gran Sasso and CERN are at different distances from the center of the Earth, so the force of gravity varies slightly between the two LABS.
由于格兰·萨索与欧洲核子研究中心，这两个位置离地球中心的距离并不一样，所以这两个实验室里的重力也稍许有所差别。
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