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《高频电子线路》第一、二章|内附手写笔记(持续更新)

  • 2026-11-06 04:13:52
《高频电子线路》第一、二章|内附手写笔记(持续更新)

本次笔记包括：第一章 绪论；第二章 选频网络。

📮 声明：

① 本文为个人复习整理笔记，内容依据课堂讲义与教材归纳整理，公式与解题步骤请以所用教材版本和任课老师要求为准；

② 笔记整理过程中难免存在疏漏或笔误，如发现错误欢迎在评论区指出，我会及时更正；

③ 本文系原创整理，转载请注明出处，未经许可请勿用于商业用途。

本文来自网友投稿或网络内容，如有侵犯您的权益请联系我们删除，联系邮箱：wyl860211@qq.com 。

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基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-11-06 16:45:46 HTTP/1.1 GET : http://h.sjds.net/a/575496.html
  2. 运行时间 : 0.086027s [ 吞吐率：11.62req/s ] 内存消耗：4,211.88kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=5bb355d2d583351c3a185d96e22bd6ff
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  1. CONNECT:[ UseTime:0.000698s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000786s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000399s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000371s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000527s ]
  6. SELECT * FROM `set` [ RunTime:0.000289s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000644s ]
  8. SELECT * FROM `article` WHERE `id` = 575496 LIMIT 1 [ RunTime:0.000384s ]
  9. UPDATE `article` SET `lasttime` = 1793954746 WHERE `id` = 575496 [ RunTime:0.001208s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000318s ]
  11. SELECT * FROM `article` WHERE `id` < 575496 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000429s ]
  12. SELECT * FROM `article` WHERE `id` > 575496 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000378s ]
  13. SELECT * FROM `article` WHERE `id` < 575496 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000557s ]
  14. SELECT * FROM `article` WHERE `id` < 575496 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000470s ]
  15. SELECT * FROM `article` WHERE `id` < 575496 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000517s ]
0.102485s