短語詞組短語beam -scanning method [電子]束掃描法;電子束掃描法E -beam vector scanning 電子束射曏量掃瞄Multi -beam scanning 多波束掃描double -beam scanning 雙光束掃描two -beam scanning 雙光束掃描cone -beam scanning 錐束掃描ion -beam scanning 離子射柱掃描narrow -beam scanning radar 窄束掃描雷達 返回 beam-scanning