题目内容
筛分法
2021-10-14
A.定方向径
B.筛分径
C.有效径
D.比表面积等价径
E.平均粒径
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='25712' and id < 2161519 and id<>'2161519' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25712' and id > 2161519 and id<>'2161519' order by id asc limit 5