基本解释活性曝气法词组短语短语Sheffield system of bioaeration 谢菲尔特生物曝气系统bioaeration更多词组英英字典柯林斯英英字典 the oxidative treatment of raw sewage by aeration bioaeration剑桥字典bioaeration柯林斯字典专业释义食品科学技术生物通气