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来源：雅诚德英语网
In order to remove the air-flotation scum effectively, a kind of automatic scum removal device is designed.
为了对浮上法中的浮渣进行有效去除，文章设计了一种自动去浮渣装置；
In order to remove the air-flotation scum effectively, a kind of automatic scum removal device is designed.
为了对浮上法中的浮渣进行有效去除，文章设计了一种自动去浮渣装置；