The excitation spectrum is a broad band and the main peak is at 402 nm,the secondary peak is at 415 nm,its excitation spectrum has a obvious red shift in comparison with traditional solid reaction and sol-gel method.是什么意思_The excitation spectrum is a broad band and the main peak is at 402 nm,the secondary peak is at 415 nm,its excitation spectrum has a obvious red shift in comparison with traditional solid reaction and sol-gel method.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句