Abstract: The vibration solution of a massive spring system is presented, the effective mass of a spring is derived. The approximate period of the vibration is given.

　
英 美
  • 文摘:給出了彈簧質(zhì)量不可忽略的彈簧振子系統的振動(dòng)解，導出了彈簧的有效質(zhì)量的漸近級數表達式，指出振動(dòng)呈擬周期性.
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan