空气质量小常识
- 1、口罩小知识
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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?
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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 : 2026-05-03 16:14:34 HTTP/2.0 GET : https://m.tianqibao.com/aqi/pingbaqu.html
- 运行时间 : 2.069142s [ 吞吐率:0.48req/s ] 内存消耗:6,636.81kb 文件加载:241
- 查询信息 : 23 queries
- 缓存信息 : 17 reads,6 writes
- 会话信息 : SESSION_ID=73887ee94012c9c3969837bda0102be7
- CONNECT:[ UseTime:0.005485s ] mysql:host=127.0.0.1;port=3306;dbname=tianqibao;charset=utf8mb4
- SHOW FULL COLUMNS FROM `sa_config` [ RunTime:0.012043s ]
- SHOW FULL COLUMNS FROM `sa_area` [ RunTime:0.002471s ]
- SELECT * FROM `sa_area` WHERE `is_hot` = 1 ORDER BY `update_time` DESC LIMIT 12 [ RunTime:0.005006s ]
- SELECT * FROM `sa_area` WHERE `level` = 1 [ RunTime:0.002361s ]
- SELECT * FROM `sa_area` WHERE `pinyin` = 'pingbaqu' LIMIT 1 [ RunTime:0.003685s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2925 LIMIT 1 [ RunTime:0.000853s ]
- SELECT * FROM `sa_area` WHERE `pid` = 391 AND `scenic_spots` = 0 LIMIT 15 [ RunTime:0.011692s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2924 LIMIT 1 [ RunTime:0.003457s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2925 LIMIT 1 [ RunTime:0.000371s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2926 LIMIT 1 [ RunTime:0.000535s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2927 LIMIT 1 [ RunTime:0.000616s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2928 LIMIT 1 [ RunTime:0.000909s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 2929 LIMIT 1 [ RunTime:0.000693s ]
- SHOW FULL COLUMNS FROM `sa_area_weather` [ RunTime:0.002097s ]
- SELECT * FROM `sa_area_weather` WHERE `pid` = 2925 LIMIT 1 [ RunTime:0.008183s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 LIMIT 1 [ RunTime:1.033096s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 AND `aqi` > 38 LIMIT 1 [ RunTime:0.186818s ]
- SELECT * FROM `sa_area` WHERE `id` IN (325,459,323,528,524,523,522,521,513,328) [ RunTime:0.003080s ]
- SELECT * FROM `sa_area` WHERE `id` IN (446,450,449,443,385,418,448,79,127,130) [ RunTime:0.003747s ]
- SELECT * FROM `sa_area` WHERE `id` IN (97,259,360,361,418,362,366,342,365,313) [ RunTime:0.000655s ]
- SELECT * FROM `sa_area` WHERE `id` IN (467,464,466,465,427,94,161,476,463,91) [ RunTime:0.000906s ]
- SHOW FULL COLUMNS FROM `sa_cms_pages` [ RunTime:0.003707s ]
- SELECT * FROM `sa_cms_pages` WHERE `status` = 1 ORDER BY `id` ASC LIMIT 6 [ RunTime:0.001116s ]

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