This bandwidth is twelve times greater than that required for SSB FDM, and six times greater than the bandwidth required for double sideband FDM.是什么意思_This bandwidth is twelve times greater than that required for SSB FDM, and six times greater than the bandwidth required for double sideband FDM.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句