短語詞組短語wave -train frequency 波列頻率triangular wave frequency train 三角波脈沖串surface pressure wave of train 列車表面壓力分布pressure wave of train crossing 列車交會壓力波Wave train character 波列特征wave train frequency 群頻teleconnection wave train 遙相關(guān)波列length of wave train 波列長度Gaussian wave train 高斯波列 返回 wave train