This paper presents a brief account of the curren t situation and developing trend of heat-chemical treated methods of sludge of wastewater p lant.是什么意思_This paper presents a brief account of the curren t situation and developing trend of heat-chemical treated methods of sludge of wastewater p lant.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句