短語(yǔ)詞組短語(yǔ)vibration n node 振動(dòng)節(jié)點(diǎn)Vibration node Vibration nodal line 節(jié)點(diǎn)two -node vibration 二節(jié)點(diǎn)振動(dòng)node of vibration mode 振型節(jié)點(diǎn) 返回 vibration node