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什么是信号带宽?-上课ppt节选

  • 2026-11-04 01:36:26
什么是信号带宽?-上课ppt节选

什么是信号带宽？-上课ppt节选

信号带宽概念入门理解

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骨折固定与搬运PPT课件

基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-11-05 14:07:05 HTTP/1.1 GET : http://h.sjds.net/a/516084.html
  2. 运行时间 : 0.092571s [ 吞吐率：10.80req/s ] 内存消耗：4,241.29kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=c418f01f5229a44f3db30902836b5504
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  1. CONNECT:[ UseTime:0.000473s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001025s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000488s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000464s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000851s ]
  6. SELECT * FROM `set` [ RunTime:0.000392s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000885s ]
  8. SELECT * FROM `article` WHERE `id` = 516084 LIMIT 1 [ RunTime:0.000499s ]
  9. UPDATE `article` SET `lasttime` = 1793858825 WHERE `id` = 516084 [ RunTime:0.001221s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000442s ]
  11. SELECT * FROM `article` WHERE `id` < 516084 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000586s ]
  12. SELECT * FROM `article` WHERE `id` > 516084 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000581s ]
  13. SELECT * FROM `article` WHERE `id` < 516084 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000810s ]
  14. SELECT * FROM `article` WHERE `id` < 516084 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000925s ]
  15. SELECT * FROM `article` WHERE `id` < 516084 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000842s ]
0.103698s