Low humic acid concentration accelerated 2,4-DCP photodegradation rate while high humic acid concentration restrained photodegradation.是什么意思_Low humic acid concentration accelerated 2,4-DCP photodegradation rate while high humic acid concentration restrained photodegradation.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句