搜索
主菜单
首页词语

圆周率

圆周率 做朗读
拼音yuán zhōu lǜ
简拼yzl
笔顺打印圆周率笔顺打印
汉字拆解圆周率

词语解释

圆周长与直径的比值。是一个常数，用π表示。中国数学家刘徽用割圆术求得π≈314，称为徽率。南北朝数学家祖冲之算出31415926＜π＜31415927，并以227作为约率，355113为密率。近代电子计算机出现后，π的近似值精确度大大提高。已经证明π是无理数，也是超越数。

随机推荐

常用菜单

词语组合

部首查字

笔画查字

使用频率

查单词

新知识，涨知识！学词典，传文化！

Copyright © 2024 新知识 | 网站地图 | 京ICP备2023025229号-13

0.4757
关
大
基本信息
SQL
$_GET
$_POST
$_COOKIE
包含文件
自动加载
  1. 模型: /www/wwwroot/cidian.xinzhishi.net/lecms/model/
  2. 视图: /www/wwwroot/cidian.xinzhishi.net/view/guoxue/ciyu_show.htm
  3. 控制器: /www/wwwroot/cidian.xinzhishi.net/lecms/control/show_control.class.php
  4. 日志目录: /www/wwwroot/cidian.xinzhishi.net/log/
  5. 当前页面: /www/wwwroot/cidian.xinzhishi.net/index.php
  6. 当前时间: 2025-05-05 16:34:17
  7. 当前网协: 3.137.200.242
  8. 请求路径: /ciyu/%E5%9C%86%E5%91%A8%E7%8E%87.html
  9. 运行时间: 0.4757
  10. 内存开销: 1.98 MB
  1. #0 [time:0.0001s] SELECT * FROM le_runtime WHERE k='cfg' LIMIT 1
  2. #1 [time:0.0001s] SELECT * FROM le_cms_ciyu WHERE id='51667'
  3. #2 [time:0.0002s] SELECT * FROM le_runtime WHERE k='cate_3' LIMIT 1
  4. #3 [time:0.0001s] SELECT * FROM le_cms_ciyu WHERE id='51667' LIMIT 1
  5. #4 [time:0.0002s] SELECT * FROM le_user WHERE uid='1' LIMIT 1
  6. #5 [time:0.0001s] SELECT * FROM le_cms_ciyu_data WHERE id='51667' LIMIT 1
  7. #6 [time:0.0005s] SELECT * FROM le_cms_ciyu_views WHERE id='51667' LIMIT 1
  8. #7 [time:0.0003s] UPDATE LOW_PRIORITY le_cms_ciyu_views SET views=views+1 WHERE id='51667' LIMIT 1
  9. #8 [time:0.0003s] SELECT * FROM le_runtime WHERE k='2f927c3729eeb7168f41d4001d52093b' LIMIT 1
  10. #9 [time:0.0001s] SELECT * FROM le_runtime WHERE k='81864f9513bb6c88661744025bf28ef2' LIMIT 1
  11. #10 [time:0.0001s] SELECT * FROM le_runtime WHERE k='b8e0905ed362cbddc6e9c0b8f61711bb' LIMIT 1
  12. #11 [time:0.0001s] SELECT * FROM le_runtime WHERE k='5a5b03036593ce1d40cb5d407c8c958b' LIMIT 1
  13. #12 [time:0.0001s] SELECT * FROM le_runtime WHERE k='e146bcb60f6218100a21a008e8eabe40' LIMIT 1
  1. #control => show
  2. #action => index
  3. #cid => 3
  4. #id => 51667
  5. #mid => 5
      1. #0 /www/wwwroot/cidian.xinzhishi.net/index.php
      2. #1 /www/wwwroot/cidian.xinzhishi.net/lecms/xiunophp/xiunophp.php
      3. #2 /www/wwwroot/cidian.xinzhishi.net/lecms/config/config.inc.php
      4. #3 /www/wwwroot/cidian.xinzhishi.net/lecms/xiunophp/lib/base.func.php
      5. #4 /www/wwwroot/cidian.xinzhishi.net/lecms/xiunophp/lib/core.class.php
      6. #5 /www/wwwroot/cidian.xinzhishi.net/lecms/xiunophp/lib/debug.class.php
      7. #6 /www/wwwroot/cidian.xinzhishi.net/lecms/xiunophp/lib/log.class.php
      8. #7 /www/wwwroot/cidian.xinzhishi.net/lecms/xiunophp/lib/model.class.php
      9. #8 /www/wwwroot/cidian.xinzhishi.net/lecms/xiunophp/lib/view.class.php
      10. #9 /www/wwwroot/cidian.xinzhishi.net/lecms/xiunophp/lib/control.class.php
      11. #10 /www/wwwroot/cidian.xinzhishi.net/lecms/xiunophp/db/db.interface.php
      12. #11 /www/wwwroot/cidian.xinzhishi.net/lecms/xiunophp/db/db_pdo_mysql.class.php
      13. #12 /www/wwwroot/cidian.xinzhishi.net/lecms/xiunophp/cache/cache.interface.php
      14. #13 /www/wwwroot/cidian.xinzhishi.net/lecms/xiunophp/cache/cache_memcache.class.php
      15. #14 /www/wwwroot/cidian.xinzhishi.net/lecms/xiunophp/ext/network/Network__interface.php
      16. #15 /www/wwwroot/cidian.xinzhishi.net/lecms/config/plugin.inc.php
      17. #16 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/cms_shop/conf.php
      18. #17 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/editor_sd/conf.php
      19. #18 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/editor_um/conf.php
      20. #19 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/highlighter/conf.php
      21. #20 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/import_data/conf.php
      22. #21 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_auto_alias/conf.php
      23. #22 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_baidu_zz/conf.php
      24. #23 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_cha/conf.php
      25. #24 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_content_img_seo/conf.php
      26. #25 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_database/conf.php
      27. #26 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_fragment/conf.php
      28. #27 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_guoxue/conf.php
      29. #28 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_keywords_links/conf.php
      30. #29 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_links/conf.php
      31. #30 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_links_tips/conf.php
      32. #31 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_log/conf.php
      33. #32 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_search_history/conf.php
      34. #33 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_sitemaps/conf.php
      35. #34 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_sogou/conf.php
      36. #35 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_special/conf.php
      37. #36 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_spider/conf.php
      38. #37 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_tag_insertcontent/conf.php
      39. #38 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/le_tpl_edit/conf.php
      40. #39 /www/wwwroot/cidian.xinzhishi.net/lecms/plugin/models_filed/conf.php
      41. #40 /www/wwwroot/cidian.xinzhishi.net/runcache/misc.func.php
      42. #41 /www/wwwroot/cidian.xinzhishi.net/runcache/core_lang/zh-cn.php
      43. #42 /www/wwwroot/cidian.xinzhishi.net/runcache/lang/zh-cn.php
      44. #43 /www/wwwroot/cidian.xinzhishi.net/runcache/lecms_control/parseurl_control.class.php
      45. #44 /www/wwwroot/cidian.xinzhishi.net/runcache/lecms_model/runtime_model.class.php
      46. #45 /www/wwwroot/cidian.xinzhishi.net/runcache/lecms_model/cms_content_model.class.php
      47. #46 /www/wwwroot/cidian.xinzhishi.net/runcache/lecms_control/show_control.class.php
      48. #47 /www/wwwroot/cidian.xinzhishi.net/runcache/lecms_control/base_control.class.php
      49. #48 /www/wwwroot/cidian.xinzhishi.net/runcache/lecms_model/urls_model.class.php
      50. #49 /www/wwwroot/cidian.xinzhishi.net/runcache/lecms_model/spider_model.class.php
      51. #50 /www/wwwroot/cidian.xinzhishi.net/runcache/lecms_model/category_model.class.php
      52. #51 /www/wwwroot/cidian.xinzhishi.net/runcache/lecms_view/guoxue,ciyu_show.htm.php
      53. #52 /www/wwwroot/cidian.xinzhishi.net/runcache/lecms_model/cms_content_data_model.class.php
      54. #53 /www/wwwroot/cidian.xinzhishi.net/runcache/lecms_model/user_model.class.php
      55. #54 /www/wwwroot/cidian.xinzhishi.net/runcache/lecms_model/cms_content_views_model.class.php
      56. #55 /www/wwwroot/cidian.xinzhishi.net/lecms/xiunophp/tpl/sys_trace.php