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 : 2026-04-01 14:58:32 HTTP/2.0 GET : https://m.tianqibao.com/aqi/lichengqu2.html
- 运行时间 : 0.167211s [ 吞吐率:5.98req/s ] 内存消耗:6,657.84kb 文件加载:241
- 查询信息 : 27 queries
- 缓存信息 : 17 reads,4 writes
- 会话信息 : SESSION_ID=fc6d80771a073f1d303ea7b109607d99
- CONNECT:[ UseTime:0.010374s ] mysql:host=127.0.0.1;port=3306;dbname=tianqibao;charset=utf8mb4
- SHOW FULL COLUMNS FROM `sa_config` [ RunTime:0.008944s ]
- SHOW FULL COLUMNS FROM `sa_area` [ RunTime:0.002394s ]
- SELECT * FROM `sa_area` WHERE `is_hot` = 1 ORDER BY `update_time` DESC LIMIT 12 [ RunTime:0.002275s ]
- SELECT * FROM `sa_area` WHERE `level` = 1 [ RunTime:0.000548s ]
- SELECT * FROM `sa_area` WHERE `pinyin` = 'lichengqu2' LIMIT 1 [ RunTime:0.001730s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1750 LIMIT 1 [ RunTime:0.000956s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1750 LIMIT 1 [ RunTime:0.000793s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1751 LIMIT 1 [ RunTime:0.000395s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1752 LIMIT 1 [ RunTime:0.000296s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1753 LIMIT 1 [ RunTime:0.000258s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1754 LIMIT 1 [ RunTime:0.000287s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1755 LIMIT 1 [ RunTime:0.000249s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1756 LIMIT 1 [ RunTime:0.000276s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1757 LIMIT 1 [ RunTime:0.000382s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1758 LIMIT 1 [ RunTime:0.000285s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1759 LIMIT 1 [ RunTime:0.000256s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1760 LIMIT 1 [ RunTime:0.000266s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 6144 LIMIT 1 [ RunTime:0.000230s ]
- SHOW FULL COLUMNS FROM `sa_area_weather` [ RunTime:0.000692s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 LIMIT 1 [ RunTime:0.005820s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 AND `aqi` > 27 LIMIT 1 [ RunTime:0.006097s ]
- SELECT * FROM `sa_area` WHERE `id` IN (408,324,323,328,325,321,320,406,327,319) [ RunTime:0.000787s ]
- SELECT * FROM `sa_area` WHERE `id` IN (136,134,95,109,127,133,418,419,99,104) [ RunTime:0.000732s ]
- SELECT * FROM `sa_area` WHERE `id` IN (97,259,360,361,414,362,396,359,366,363) [ RunTime:0.000701s ]
- SELECT * FROM `sa_area` WHERE `id` IN (128,466,161,467,159,105,464,126,465,463) [ RunTime:0.000575s ]
- SHOW FULL COLUMNS FROM `sa_cms_pages` [ RunTime:0.000852s ]
- SELECT * FROM `sa_cms_pages` WHERE `status` = 1 ORDER BY `id` ASC LIMIT 6 [ RunTime:0.000457s ]

0.176375s