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30页PPT| 中南大学周向阳:钠电硬碳负极材料的开发

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30页PPT| 中南大学周向阳:钠电硬碳负极材料的开发

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Excel神技巧|SUMIF函数使用方法大揭秘!

基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-09-23 19:00:04 HTTP/1.1 GET : http://h.sjds.net/a/464722.html
  2. 运行时间 : 0.070835s [ 吞吐率：14.12req/s ] 内存消耗：4,208.79kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=cd7e4e2820992a66da6db0b4152b874c
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  1. CONNECT:[ UseTime:0.000408s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000829s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000410s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000352s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000514s ]
  6. SELECT * FROM `set` [ RunTime:0.000284s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000765s ]
  8. SELECT * FROM `article` WHERE `id` = 464722 LIMIT 1 [ RunTime:0.000391s ]
  9. UPDATE `article` SET `lasttime` = 1790161205 WHERE `id` = 464722 [ RunTime:0.002028s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000330s ]
  11. SELECT * FROM `article` WHERE `id` < 464722 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000429s ]
  12. SELECT * FROM `article` WHERE `id` > 464722 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000365s ]
  13. SELECT * FROM `article` WHERE `id` < 464722 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000522s ]
  14. SELECT * FROM `article` WHERE `id` < 464722 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000633s ]
  15. SELECT * FROM `article` WHERE `id` < 464722 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000571s ]
0.080901s