一般地，我们将一定的导体中（  ）称为导体的载流量。 

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69482' and id < 4500335 and id<>'4500335' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69482' and id > 4500335 and id<>'4500335' order by id asc limit 5