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【一轮复习课件】第63讲 交变电流的产生和描述

  • 2026-11-04 00:00:29
【一轮复习课件】第63讲 交变电流的产生和描述
陈庆威老师学科网课件搜索方式：人教版（2019）—课件—精品—作者：qwwl，具体形式如下：

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  1. CONNECT:[ UseTime:0.000674s ] mysql:host=172.18.0.4;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000753s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000350s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000357s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000515s ]
  6. SELECT * FROM `set` [ RunTime:0.000266s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000702s ]
  8. SELECT * FROM `article` WHERE `id` = 461432 LIMIT 1 [ RunTime:0.000337s ]
  9. UPDATE `article` SET `lasttime` = 1794127439 WHERE `id` = 461432 [ RunTime:0.001476s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000303s ]
  11. SELECT * FROM `article` WHERE `id` < 461432 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000379s ]
  12. SELECT * FROM `article` WHERE `id` > 461432 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000382s ]
  13. SELECT * FROM `article` WHERE `id` < 461432 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000704s ]
  14. SELECT * FROM `article` WHERE `id` < 461432 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000654s ]
  15. SELECT * FROM `article` WHERE `id` < 461432 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000890s ]
0.106826s