According to the structural properties and the vibration displacement of the box girder bridge, the element space damping matrix of the box girder bridge is derived on the principle of energy.是什么意思_According to the structural properties and the vibration displacement of the box girder bridge, the element space damping matrix of the box girder bridge is derived on the principle of energy.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句