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[分享] PPT分享-天然碳氢制冷剂R290空调系统安全关键技术研究

  • 2026-10-29 13:28:22
[分享] PPT分享-天然碳氢制冷剂R290空调系统安全关键技术研究

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往期回顾：

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[分享] PPT分享-热管理技术体系开发与工程应用

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安全材料PPT:《有限空间作业安全技术规范》解读PPT-187页_

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  1. CONNECT:[ UseTime:0.000629s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001234s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000502s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000402s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000600s ]
  6. SELECT * FROM `set` [ RunTime:0.000271s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000623s ]
  8. SELECT * FROM `article` WHERE `id` = 522059 LIMIT 1 [ RunTime:0.000375s ]
  9. UPDATE `article` SET `lasttime` = 1793751493 WHERE `id` = 522059 [ RunTime:0.001464s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000337s ]
  11. SELECT * FROM `article` WHERE `id` < 522059 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000444s ]
  12. SELECT * FROM `article` WHERE `id` > 522059 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000372s ]
  13. SELECT * FROM `article` WHERE `id` < 522059 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000603s ]
  14. SELECT * FROM `article` WHERE `id` < 522059 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000702s ]
  15. SELECT * FROM `article` WHERE `id` < 522059 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000737s ]
0.094905s