同根派生 gravitational theory相关词英汉例句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。gravitational theory更多例句