The motion model of saw motor is set up by the formulae of hertz ' s theory and coulomb ' s friction law 以计算球体?平面挤压形变的赫兹公式和计算摩擦力的库仑定律为基础，建立了表面弹性波马达的运动模型。
2.
If the electric charges in the two stars are supposed to be equal , it can be calculated according to the kulun ' s theorem that 19100 nuclear unity masses must have one electron , such that the electromagnetic force produced can provide enough centrifugal force for the rotation 假定两星所带的电荷数量相等，根据库仑定律，我们可以计算出，在两星中平均每19100个原子单位质量，就必须带有一个电子电荷，所产生的静电引力才能够提供足够的向心力。
3.
For the properties of large thickness , high strength of the landslide mass and the obvious deep deformation in the recent days , based on the coulomb law , the author puts forward a primary control plan in this paper of adopting the rock and soil reinforcement to prevent the deep sliding of the landslide 针对该滑坡厚度巨大，滑体强度高，近期深部变形较明显的实情，作者以库仑定律为基础，提出采用岩土加固治理滑坡区深部滑移的初步治理方案。
