IR spectrum of the samples exhibits an obvious band at 550cm-1.The band at near 550cm 1 is similar to that of five-membered rings in microporous zeolites.是什么意思_IR spectrum of the samples exhibits an obvious band at 550cm-1.The band at near 550cm 1 is similar to that of five-membered rings in microporous zeolites.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句