空气质量小常识
- 1、口罩小知识
-
常见的PM2.5口罩有N90,N95,N99等类型,其中数字90代表过滤效果在90%以上,95代表过滤效果在95%以上。过渡效果越好,相对呼吸也越困难,一般选择N90系列的口罩就足够了。
- 2、PM2.5和PM10的区别
- PM2.5指空气中直径≤2.5微米的颗粒物,可入肺。吸入过多易引发哮喘、支气管炎和心血管病等疾病。
PM10指空气中直径≤10微米的颗粒物,可入上呼吸道,但可排出体外,对人体危害相对较小。
- 3、雾霾是什么?
-
雾霾天气是一种大气污染状态,包含各种含量超标的悬浮颗粒物。雾是液态水珠,霾是固体,包括空气中的灰尘、硫酸、硝酸、可吸入颗粒物等粒子,会使能见度降低。两者结合在一起就是雾霾。
基本
文件
流程
错误
SQL
调试
- 请求信息 : 2026-04-28 20:27:24 HTTP/2.0 GET : https://m.tianqibao.com/aqi/tctdjc.html
- 运行时间 : 1.433493s [ 吞吐率:0.70req/s ] 内存消耗:6,535.91kb 文件加载:241
- 查询信息 : 24 queries
- 缓存信息 : 17 reads,4 writes
- 会话信息 : SESSION_ID=dec8ff9f25f7ffc25312a3522510875c
- CONNECT:[ UseTime:0.002959s ] mysql:host=127.0.0.1;port=3306;dbname=tianqibao;charset=utf8mb4
- SHOW FULL COLUMNS FROM `sa_config` [ RunTime:0.019607s ]
- SHOW FULL COLUMNS FROM `sa_area` [ RunTime:0.005636s ]
- SELECT * FROM `sa_area` WHERE `pinyin` = 'tctdjc' LIMIT 1 [ RunTime:0.006789s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 4926 LIMIT 1 [ RunTime:0.002352s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2521 LIMIT 1 [ RunTime:0.000993s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2522 LIMIT 1 [ RunTime:0.002281s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2523 LIMIT 1 [ RunTime:0.000806s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2524 LIMIT 1 [ RunTime:0.002647s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2525 LIMIT 1 [ RunTime:0.000867s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2526 LIMIT 1 [ RunTime:0.002120s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2527 LIMIT 1 [ RunTime:0.001076s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2528 LIMIT 1 [ RunTime:0.000378s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2529 LIMIT 1 [ RunTime:0.001089s ]
- SHOW FULL COLUMNS FROM `sa_area_weather` [ RunTime:0.003983s ]
- SELECT * FROM `sa_area_weather` WHERE `pid` = 4926 LIMIT 1 [ RunTime:0.018477s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 LIMIT 1 [ RunTime:0.831479s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 AND `aqi` > 23 LIMIT 1 [ RunTime:0.014183s ]
- SELECT * FROM `sa_area_weather` WHERE `rank` = 1 ORDER BY `high_temp` DESC LIMIT 10 [ RunTime:0.008430s ]
- SELECT * FROM `sa_area` WHERE `id` IN (324,459,321,325,323,322,320,313,310,328) [ RunTime:0.011094s ]
- SELECT * FROM `sa_area` WHERE `id` IN (418,97,449,450,446,120,83,136,385,386) [ RunTime:0.026810s ]
- SELECT * FROM `sa_area` WHERE `id` IN (79,396,410,414,445,449,451,475,477,448) [ RunTime:0.016914s ]
- SELECT * FROM `sa_area` WHERE `id` IN (438,431,467,466,465,420,459,421,464,423) [ RunTime:0.004479s ]
- SHOW FULL COLUMNS FROM `sa_cms_pages` [ RunTime:0.005434s ]
- SELECT * FROM `sa_cms_pages` WHERE `status` = 1 ORDER BY `id` ASC LIMIT 6 [ RunTime:0.001163s ]

1.459550s