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 14:03:09 HTTP/2.0 GET : https://m.tianqibao.com/aqi/xiangtan.html
- 运行时间 : 1.460805s [ 吞吐率:0.68req/s ] 内存消耗:6,672.84kb 文件加载:241
- 查询信息 : 28 queries
- 缓存信息 : 17 reads,3 writes
- 会话信息 : SESSION_ID=084b08289914aeb4db5e36d4773516ef
- CONNECT:[ UseTime:0.076648s ] mysql:host=127.0.0.1;port=3306;dbname=tianqibao;charset=utf8mb4
- SHOW FULL COLUMNS FROM `sa_config` [ RunTime:0.029208s ]
- SHOW FULL COLUMNS FROM `sa_area` [ RunTime:0.018107s ]
- SELECT * FROM `sa_area` WHERE `pinyin` = 'xiangtan' LIMIT 1 [ RunTime:0.030436s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 263 LIMIT 1 [ RunTime:0.030010s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 261 LIMIT 1 [ RunTime:0.030314s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 262 LIMIT 1 [ RunTime:0.019955s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 263 LIMIT 1 [ RunTime:0.024424s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 264 LIMIT 1 [ RunTime:0.043890s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 265 LIMIT 1 [ RunTime:0.021527s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 266 LIMIT 1 [ RunTime:0.005661s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 267 LIMIT 1 [ RunTime:0.004469s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 268 LIMIT 1 [ RunTime:0.016732s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 269 LIMIT 1 [ RunTime:0.002628s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 270 LIMIT 1 [ RunTime:0.017922s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 271 LIMIT 1 [ RunTime:0.009454s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 272 LIMIT 1 [ RunTime:0.018364s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 273 LIMIT 1 [ RunTime:0.027164s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 274 LIMIT 1 [ RunTime:0.008695s ]
- SHOW FULL COLUMNS FROM `sa_area_weather` [ RunTime:0.044026s ]
- SELECT * FROM `sa_area_weather` WHERE `pid` = 263 LIMIT 1 [ RunTime:0.029831s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 LIMIT 1 [ RunTime:0.035837s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 AND `aqi` > 70 LIMIT 1 [ RunTime:0.028773s ]
- SELECT * FROM `sa_area` WHERE `id` IN (459,428,356,336,361,343,458,375,471,462) [ RunTime:0.036200s ]
- SELECT * FROM `sa_area` WHERE `id` IN (419,136,418,446,443,450,95,130,414,449) [ RunTime:0.023915s ]
- SELECT * FROM `sa_area` WHERE `id` IN (450,396,95,468,407,123,366,410,412,342) [ RunTime:0.014638s ]
- SELECT * FROM `sa_area` WHERE `id` IN (241,476,463,251,371,232,189,84,465,466) [ RunTime:0.036134s ]
- SHOW FULL COLUMNS FROM `sa_cms_pages` [ RunTime:0.010495s ]
- SELECT * FROM `sa_cms_pages` WHERE `status` = 1 ORDER BY `id` ASC LIMIT 6 [ RunTime:0.031430s ]

1.618056s