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超全!245页PPT关于常用钢材料性能

  • 2026-11-09 11:32:21
超全!245页PPT关于常用钢材料性能

超全！245页PPT关于常用钢材料性能

来源：中国腐蚀与防护网

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机械加工过程中的“精度”,这篇PPT讲全了!

基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-11-13 07:42:06 HTTP/1.1 GET : http://h.sjds.net/a/479777.html
  2. 运行时间 : 0.078603s [ 吞吐率：12.72req/s ] 内存消耗：4,385.83kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=d03fd58ea610fb8bf2caa68f08eda403
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  1. CONNECT:[ UseTime:0.000624s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001014s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000400s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000351s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000578s ]
  6. SELECT * FROM `set` [ RunTime:0.000280s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000690s ]
  8. SELECT * FROM `article` WHERE `id` = 479777 LIMIT 1 [ RunTime:0.000466s ]
  9. UPDATE `article` SET `lasttime` = 1794526926 WHERE `id` = 479777 [ RunTime:0.001971s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000321s ]
  11. SELECT * FROM `article` WHERE `id` < 479777 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000467s ]
  12. SELECT * FROM `article` WHERE `id` > 479777 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000379s ]
  13. SELECT * FROM `article` WHERE `id` < 479777 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000537s ]
  14. SELECT * FROM `article` WHERE `id` < 479777 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000670s ]
  15. SELECT * FROM `article` WHERE `id` < 479777 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000567s ]
0.091026s