They first through the addition of cleaning staff WeChat, external links jump, the public number to promote these three ways to promote, to lure users to use.
他们先通过添加清理人员微信、外部链接跳转、公众号推广这三种方式宣传，引诱用户使用。
2
Water distribution uniformity, high resistance to pollution degree low, replacement cost, external line is simple, easy cleaning maintenance and design degrees of freedom and many other advantages.
水流分布均匀、耐污染程度高、更换费用低、外部管路简单、易于清洗维护保养和设计自由度大等许多优点。
3
The external pressure tubular moduel and PS PAN blended membranes were used in the study on the characteristics of hydraulic cleaning in crossflow membrane bioreactor.