青云翻译

However, the expensive membrane materials and membrane fouling is not easy to control deficiencies limit the mbr technology promotion [2-3].

However, the expensive membrane fouling in membrane materials and difficult to control and limit the extension of MBR technology [2-3].

However, the expensive membrane material and the membrane pollution not easy to control and so on the flaws to limit MBR technical promoted (2-3).

However, the expensive membrane materials and membrane is not easy to control pollution, such as the dissemination of technologies limit the MBR [ 2 - 3 ].

However, the expensive membrane fouling in membrane materials and difficult to control and limit the extension of MBR technology [2-3].