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 : 2026-05-18 14:21:01 HTTP/2.0 GET : https://m.tianqibao.com/aqi/dongpingxian.html
- 运行时间 : 1.584257s [ 吞吐率:0.63req/s ] 内存消耗:6,642.34kb 文件加载:241
- 查询信息 : 22 queries
- 缓存信息 : 17 reads,5 writes
- 会话信息 : SESSION_ID=24c9ecddb49f0bf766ae3f716a938140
- CONNECT:[ UseTime:0.000640s ] mysql:host=127.0.0.1;port=3306;dbname=tianqibao;charset=utf8mb4
- SHOW FULL COLUMNS FROM `sa_config` [ RunTime:0.002650s ]
- SHOW FULL COLUMNS FROM `sa_area` [ RunTime:0.000575s ]
- SELECT * FROM `sa_area` WHERE `pinyin` = 'dongpingxian' LIMIT 1 [ RunTime:0.001296s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1983 LIMIT 1 [ RunTime:0.000299s ]
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- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1981 LIMIT 1 [ RunTime:0.000259s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1982 LIMIT 1 [ RunTime:0.000445s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1983 LIMIT 1 [ RunTime:0.000253s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1984 LIMIT 1 [ RunTime:0.000236s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1985 LIMIT 1 [ RunTime:0.000230s ]
- SHOW FULL COLUMNS FROM `sa_area_weather` [ RunTime:0.000524s ]
- SELECT * FROM `sa_area_weather` WHERE `pid` = 1983 LIMIT 1 [ RunTime:0.002987s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 LIMIT 1 [ RunTime:1.518095s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 AND `aqi` > 18 LIMIT 1 [ RunTime:0.006973s ]
- SELECT * FROM `sa_area_weather` WHERE `rank` = 1 ORDER BY `high_temp` DESC LIMIT 10 [ RunTime:0.001028s ]
- SELECT * FROM `sa_area` WHERE `id` IN (479,408,467,465,369,324,322,321,320,318) [ RunTime:0.000436s ]
- SELECT * FROM `sa_area` WHERE `id` IN (418,446,450,419,136,385,443,449,414,417) [ RunTime:0.000374s ]
- SELECT * FROM `sa_area` WHERE `id` IN (95,358,359,363,366,350,342,343,356,330) [ RunTime:0.000365s ]
- SELECT * FROM `sa_area_weather` WHERE `rank` = 1 ORDER BY `aqi` DESC LIMIT 10 [ RunTime:0.001320s ]
- SELECT * FROM `sa_area` WHERE `id` IN (467,464,466,465,430,444,432,188,180,463) [ RunTime:0.000348s ]
- SHOW FULL COLUMNS FROM `sa_cms_pages` [ RunTime:0.000543s ]
- SELECT * FROM `sa_cms_pages` WHERE `status` = 1 ORDER BY `id` ASC LIMIT 6 [ RunTime:0.000327s ]

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