短語詞組短語beam input aperture 輸入孔徑beam defining aperture 限定線束孔徑scan -beam synthetic aperture radar 波束掃描合成孔徑雷達(dá)electron beam aperture 電子束孔徑角beam -limiting aperture 限束孔徑Beam diameter at aperture 出光孔處光斑直徑;光束直徑;出口光斑beam aperture detail 波束孔徑beam effciency of aperture antenna 孔徑天線之主 返回 beam aperture