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现代混凝土配合比全计算法(免费下载,仅供参考学习)

  • 2026-01-09 20:04:51
现代混凝土配合比全计算法(免费下载,仅供参考学习)

[图片][图片][图片]现代混凝土配合比设计全计算法 前言：传统的混凝土配合比设计方法主要以强度为基础，但这种方法已不能满足现代混凝土对工作性、强度和耐久性的综合要求。因此，全计算法作为一种更为科学、精确的设计方法。 一、全计算法的基本原理 全计算法是以“工作性、强度和耐久性”为...

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  1. CONNECT:[ UseTime:0.000521s ] mysql:host=127.0.0.1;port=3306;dbname=no_yeyulingfeng;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000616s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001847s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.002353s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000482s ]
  6. SELECT * FROM `set` [ RunTime:0.011614s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000571s ]
  8. SELECT * FROM `article` WHERE `id` = 459799 LIMIT 1 [ RunTime:0.003774s ]
  9. UPDATE `article` SET `lasttime` = 1767966077 WHERE `id` = 459799 [ RunTime:0.004916s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000332s ]
  11. SELECT * FROM `article` WHERE `id` < 459799 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000352s ]
  12. SELECT * FROM `article` WHERE `id` > 459799 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000765s ]
  13. SELECT * FROM `article` WHERE `id` < 459799 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.026588s ]
  14. SELECT * FROM `article` WHERE `id` < 459799 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.048000s ]
  15. SELECT * FROM `article` WHERE `id` < 459799 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.010772s ]
0.203774s