The degradation is the biggest when pH = 4. 5 by using both ultrasonic and TiO2/SiO2/Fe3O4 magnetic nana TiO2/SiO2/Fe3O4 has not only excellent catalytic activity but also good magnetic property that can make the callback easy.是什么意思_The degradation is the biggest when pH = 4. 5 by using both ultrasonic and TiO2/SiO2/Fe3O4 magnetic nana TiO2/SiO2/Fe3O4 has not only excellent catalytic activity but also good magnetic property that can make the callback easy.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句