ultra-filtration英'ʌltrəfɪltr'eɪʃn美'ʌltrəfɪltr'eɪʃnCOCA³¹⁵¹¹¹⁺⁴BNC²³⁶²¹³⁺¹ 基本例句 超滤¹⁰⁰ Membrane fouling of micro-filtration and ultra-filtration leading to flux decline in wastewater treatment can be attenuated by appropriate pretreatment. 综述了当前在膜分离技术处理废水中使用的几种预处理技术的基本原理及其应用。 dictall