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 : 2026-05-21 05:00:05 HTTP/2.0 GET : https://m.tianqibao.com/aqi/yuehuqu.html
- 运行时间 : 0.082218s [ 吞吐率:12.16req/s ] 内存消耗:6,527.05kb 文件加载:241
- 查询信息 : 20 queries
- 缓存信息 : 17 reads,6 writes
- 会话信息 : SESSION_ID=76d8e2cc66d9171214e0554cb377b9bc
- CONNECT:[ UseTime:0.000944s ] mysql:host=127.0.0.1;port=3306;dbname=tianqibao;charset=utf8mb4
- SHOW FULL COLUMNS FROM `sa_config` [ RunTime:0.003342s ]
- SHOW FULL COLUMNS FROM `sa_area` [ RunTime:0.000519s ]
- SELECT * FROM `sa_area` WHERE `is_hot` = 1 ORDER BY `update_time` DESC LIMIT 12 [ RunTime:0.003015s ]
- SELECT * FROM `sa_area` WHERE `level` = 1 [ RunTime:0.000617s ]
- SELECT * FROM `sa_area` WHERE `pinyin` = 'yuehuqu' LIMIT 1 [ RunTime:0.001545s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1831 LIMIT 1 [ RunTime:0.000268s ]
- SELECT * FROM `sa_area` WHERE `pid` = 207 AND `scenic_spots` = 0 LIMIT 15 [ RunTime:0.004644s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1831 LIMIT 1 [ RunTime:0.000308s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1832 LIMIT 1 [ RunTime:0.000249s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1833 LIMIT 1 [ RunTime:0.000407s ]
- SHOW FULL COLUMNS FROM `sa_area_weather` [ RunTime:0.001678s ]
- SELECT * FROM `sa_area_weather` WHERE `pid` = 1831 LIMIT 1 [ RunTime:0.003998s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 LIMIT 1 [ RunTime:0.005393s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 AND `aqi` > 0 LIMIT 1 [ RunTime:0.007191s ]
- SELECT * FROM `sa_area` WHERE `id` IN (369,408,324,322,321,313,411,323,320,310) [ RunTime:0.000522s ]
- SELECT * FROM `sa_area` WHERE `id` IN (418,419,446,449,412,450,385,443,451,130) [ RunTime:0.000369s ]
- SELECT * FROM `sa_area` WHERE `id` IN (364,450,396,358,359,366,342,363,365,393) [ RunTime:0.000374s ]
- SELECT * FROM `sa_area` WHERE `id` IN (476,467,459,463,436,383,451,444,464,431) [ RunTime:0.000374s ]
- SHOW FULL COLUMNS FROM `sa_cms_pages` [ RunTime:0.002238s ]
- SELECT * FROM `sa_cms_pages` WHERE `status` = 1 ORDER BY `id` ASC LIMIT 6 [ RunTime:0.000333s ]

0.088370s