(physics) the theory that any two particles of matter attract one another with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them
双语例句
Newton's theory of gravitation is an approximation of a more general theory. 牛顿的引力理论只是一种更普遍理论的近似形式。
At that time, the Newtonian theory of gravity and the concept of escape velocity were well known. 那时，牛顿引力理论和逃逸速度的观念是广为人知的。
