A scheme is proposed to derive natural frequencies and modal functions of a beam under the given boundary conditions and moving axially at a constant speed. 提出在给定边界条件下确定一匀速运动梁固有频率和模态函数的方法。
We postulated that the state of a quantum-mechanical system is specified by a state function. 我们已假设量子力学体系的态用态函数来描述。