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 13:00:45 HTTP/2.0 GET : https://m.tianqibao.com/aqi/jiayuxian.html
- 运行时间 : 0.309287s [ 吞吐率:3.23req/s ] 内存消耗:6,653.10kb 文件加载:241
- 查询信息 : 19 queries
- 缓存信息 : 18 reads,2 writes
- 会话信息 : SESSION_ID=d166954ccbebf1bced3dd0bb19a3724c
- CONNECT:[ UseTime:0.016983s ] mysql:host=127.0.0.1;port=3306;dbname=tianqibao;charset=utf8mb4
- SHOW FULL COLUMNS FROM `sa_config` [ RunTime:0.002579s ]
- SHOW FULL COLUMNS FROM `sa_area` [ RunTime:0.004537s ]
- SELECT * FROM `sa_area` WHERE `pinyin` = 'jiayuxian' LIMIT 1 [ RunTime:0.006106s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2315 LIMIT 1 [ RunTime:0.002486s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2314 LIMIT 1 [ RunTime:0.001424s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2315 LIMIT 1 [ RunTime:0.001069s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2316 LIMIT 1 [ RunTime:0.001084s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2317 LIMIT 1 [ RunTime:0.001441s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2318 LIMIT 1 [ RunTime:0.001770s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2319 LIMIT 1 [ RunTime:0.003118s ]
- SHOW FULL COLUMNS FROM `sa_area_weather` [ RunTime:0.003816s ]
- SELECT * FROM `sa_area_weather` WHERE `pid` = 2315 LIMIT 1 [ RunTime:0.017367s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 AND `aqi` > 53 LIMIT 1 [ RunTime:0.021903s ]
- SELECT * FROM `sa_area` WHERE `id` IN (459,428,356,336,361,343,458,375,471,462) [ RunTime:0.006735s ]
- SELECT * FROM `sa_area` WHERE `id` IN (419,136,418,446,443,450,95,130,414,449) [ RunTime:0.006106s ]
- SELECT * FROM `sa_area` WHERE `id` IN (450,396,95,468,407,123,366,410,412,342) [ RunTime:0.003537s ]
- SELECT * FROM `sa_area` WHERE `id` IN (241,476,463,251,371,232,189,84,465,466) [ RunTime:0.004368s ]
- SHOW FULL COLUMNS FROM `sa_cms_pages` [ RunTime:0.005426s ]
- SELECT * FROM `sa_cms_pages` WHERE `status` = 1 ORDER BY `id` ASC LIMIT 6 [ RunTime:0.009469s ]

0.318736s