The changes of turbidity,pH,disinfectants residual and heterotrophic plate count(HPC) in drinking water distribution system were investigated.是什么意思_The changes of turbidity,pH,disinfectants residual and heterotrophic plate count(HPC) in drinking water distribution system were investigated.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句