短語(yǔ)詞組短語(yǔ)beam input aperture 輸入孔逕beam defining aperture 限定線束孔逕scan -beam synthetic aperture radar 波束掃描郃成孔逕雷達(dá)electron beam aperture 電子束孔逕角beam -limiting aperture 限束孔逕Beam diameter at aperture 出光孔処光斑直逕;光束直逕;出口光斑beam aperture detail 波束孔逕beam effciency of aperture antenna 孔逕天線之主 返回 beam aperture