Secondly, a two-focal-point method is introduced for an optimal design of an EDG demultiplexer with a flat-top spectral response.是什么意思_Secondly, a two-focal-point method is introduced for an optimal design of an EDG demultiplexer with a flat-top spectral response.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句