SQL Error: select id,body,options from ***_enewstiku where sourceid='32648' and id < 2595970 and id<>'2595970' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32648' and id > 2595970 and id<>'2595970' order by id asc limit 5
为门极电流阶跃开始到阳极电流上升至稳态值的10%。
为阳极电流从10%上升至稳态值的90%所用时间。