乳剂在放置过程中，乳滴逐渐聚集在上层或下层的现象，称为

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29385' and id < 2393787 and id<>'2393787' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29385' and id > 2393787 and id<>'2393787' order by id asc limit 5