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 : 2026-07-15 14:04:31 HTTP/2.0 GET : https://m.tianqibao.com/aqi/kuangqu.html
- 运行时间 : 0.632170s [ 吞吐率:1.58req/s ] 内存消耗:6,651.12kb 文件加载:241
- 查询信息 : 20 queries
- 缓存信息 : 17 reads,4 writes
- 会话信息 : SESSION_ID=3fa53ef6cfeb2b3c689536488ee7e0ba
- CONNECT:[ UseTime:0.008430s ] mysql:host=127.0.0.1;port=3306;dbname=tianqibao;charset=utf8mb4
- SHOW FULL COLUMNS FROM `sa_config` [ RunTime:0.145714s ]
- SHOW FULL COLUMNS FROM `sa_area` [ RunTime:0.007442s ]
- SELECT * FROM `sa_area` WHERE `is_hot` = 1 ORDER BY `update_time` DESC LIMIT 12 [ RunTime:0.017767s ]
- SELECT * FROM `sa_area` WHERE `pinyin` = 'kuangqu' LIMIT 1 [ RunTime:0.007541s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 901 LIMIT 1 [ RunTime:0.010270s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 900 LIMIT 1 [ RunTime:0.011504s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 901 LIMIT 1 [ RunTime:0.009388s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 902 LIMIT 1 [ RunTime:0.000813s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 903 LIMIT 1 [ RunTime:0.001299s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 904 LIMIT 1 [ RunTime:0.004113s ]
- SHOW FULL COLUMNS FROM `sa_area_weather` [ RunTime:0.005020s ]
- SELECT * FROM `sa_area_weather` WHERE `pid` = 901 LIMIT 1 [ RunTime:0.013057s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 LIMIT 1 [ RunTime:0.011674s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 AND `aqi` > 47 LIMIT 1 [ RunTime:0.015722s ]
- SELECT * FROM `sa_area` WHERE `id` IN (459,428,356,336,361,343,458,375,471,462) [ RunTime:0.026967s ]
- SELECT * FROM `sa_area` WHERE `id` IN (419,136,418,446,443,450,95,130,414,449) [ RunTime:0.011647s ]
- SELECT * FROM `sa_area` WHERE `id` IN (450,396,95,468,407,123,366,410,412,342) [ RunTime:0.012206s ]
- SELECT * FROM `sa_area` WHERE `id` IN (241,476,463,251,371,232,189,84,465,466) [ RunTime:0.004407s ]
- SHOW FULL COLUMNS FROM `sa_cms_pages` [ RunTime:0.008376s ]
- SELECT * FROM `sa_cms_pages` WHERE `status` = 1 ORDER BY `id` ASC LIMIT 6 [ RunTime:0.001062s ]

0.641732s