Two kinds of finite-dimensional equation about the flexible beam have been established by use of the unconstrainted modes of vibration and the constrainted modes of vibration respectively.是什么意思_Two kinds of finite-dimensional equation about the flexible beam have been established by use of the unconstrainted modes of vibration and the constrainted modes of vibration respectively.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句