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电子书|《天线理论与设计》(第2版),作者:L.Stutzman等

  • 2026-07-09 14:24:43
电子书|《天线理论与设计》(第2版),作者:L.Stutzman等

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《天线理论与设计》（第2版），作者：L.Stutzman等

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  1. CONNECT:[ UseTime:0.000655s ] mysql:host=127.0.0.1;port=3306;dbname=g_15386;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000893s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000412s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000258s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000532s ]
  6. SELECT * FROM `set` [ RunTime:0.000195s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000620s ]
  8. SELECT * FROM `article` WHERE `id` = 473279 LIMIT 1 [ RunTime:0.015155s ]
  9. UPDATE `article` SET `lasttime` = 1783853158 WHERE `id` = 473279 [ RunTime:0.016515s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.002997s ]
  11. SELECT * FROM `article` WHERE `id` < 473279 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000634s ]
  12. SELECT * FROM `article` WHERE `id` > 473279 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.007745s ]
  13. SELECT * FROM `article` WHERE `id` < 473279 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.008186s ]
  14. SELECT * FROM `article` WHERE `id` < 473279 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.016299s ]
  15. SELECT * FROM `article` WHERE `id` < 473279 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.031120s ]
0.170469s