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 14:54:36 HTTP/2.0 GET : https://m.tianqibao.com/aqi/xinbeiqu.html
- 运行时间 : 0.479556s [ 吞吐率:2.09req/s ] 内存消耗:6,657.00kb 文件加载:241
- 查询信息 : 19 queries
- 缓存信息 : 18 reads,2 writes
- 会话信息 : SESSION_ID=342f20b766ae77e8c00e3687d1506a4b
- CONNECT:[ UseTime:0.017716s ] mysql:host=127.0.0.1;port=3306;dbname=tianqibao;charset=utf8mb4
- SHOW FULL COLUMNS FROM `sa_config` [ RunTime:0.023772s ]
- SHOW FULL COLUMNS FROM `sa_area` [ RunTime:0.011406s ]
- SELECT * FROM `sa_area` WHERE `pinyin` = 'xinbeiqu' LIMIT 1 [ RunTime:0.034924s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1433 LIMIT 1 [ RunTime:0.007008s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1431 LIMIT 1 [ RunTime:0.019534s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1432 LIMIT 1 [ RunTime:0.002441s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1433 LIMIT 1 [ RunTime:0.002533s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1434 LIMIT 1 [ RunTime:0.006357s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1435 LIMIT 1 [ RunTime:0.000870s ]
- SELECT COUNT(*) AS think_count FROM `sa_area` WHERE `pid` = 1436 LIMIT 1 [ RunTime:0.000817s ]
- SHOW FULL COLUMNS FROM `sa_area_weather` [ RunTime:0.001497s ]
- SELECT * FROM `sa_area_weather` WHERE `pid` = 1433 LIMIT 1 [ RunTime:0.001346s ]
- SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE `rank` = 1 AND `aqi` > 46 LIMIT 1 [ RunTime:0.035470s ]
- SELECT * FROM `sa_area` WHERE `id` IN (459,362,360,428,381,380,377,356,350,336) [ RunTime:0.016997s ]
- SELECT * FROM `sa_area` WHERE `id` IN (419,418,446,450,414,449,385,386,415,417) [ RunTime:0.021987s ]
- SELECT * FROM `sa_area` WHERE `id` IN (450,396,95,468,407,123,366,410,412,342) [ RunTime:0.004674s ]
- SELECT * FROM `sa_area` WHERE `id` IN (241,476,463,251,371,232,189,84,465,466) [ RunTime:0.006296s ]
- SHOW FULL COLUMNS FROM `sa_cms_pages` [ RunTime:0.003948s ]
- SELECT * FROM `sa_cms_pages` WHERE `status` = 1 ORDER BY `id` ASC LIMIT 6 [ RunTime:0.003876s ]

0.494350s