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
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                        错误
                        SQL
                        调试
                    
        
                        
                
                    - 请求信息 : 2025-11-04 11:35:28 HTTP/2.0 GET : https://m.tianqibao.com/aqi/pudongxin.html
 - 运行时间 : 0.211576s [ 吞吐率:4.73req/s ] 内存消耗:6,563.52kb 文件加载:241
 - 查询信息 : 29 queries
 - 缓存信息 : 17 reads,3 writes
 - 会话信息 : SESSION_ID=f7e2b79524a5a3bb7fdbce5ffdc4081d
                 
             
                        
                        
                        
                        
                
                    - CONNECT:[ UseTime:0.002559s ] mysql:host=127.0.0.1;port=3306;dbname=tianqibao;charset=utf8mb4
 - SHOW FULL COLUMNS FROM `sa_config` [ RunTime:0.001955s ]
 - SHOW FULL COLUMNS FROM `sa_area` [ RunTime:0.004899s ]
 - SELECT * FROM `sa_area` WHERE  `pinyin` = 'pudongxin' LIMIT 1 [ RunTime:0.011308s ]
 - SELECT COUNT(*) AS think_count FROM `sa_area` WHERE  `pid` = 147 LIMIT 1 [ RunTime:0.003620s ]
 - SELECT COUNT(*) AS think_count FROM `sa_area` WHERE  `pid` = 137 LIMIT 1 [ RunTime:0.006743s ]
 - SELECT COUNT(*) AS think_count FROM `sa_area` WHERE  `pid` = 138 LIMIT 1 [ RunTime:0.003870s ]
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 - SELECT COUNT(*) AS think_count FROM `sa_area` WHERE  `pid` = 147 LIMIT 1 [ RunTime:0.002516s ]
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 - SELECT COUNT(*) AS think_count FROM `sa_area` WHERE  `pid` = 151 LIMIT 1 [ RunTime:0.001076s ]
 - SHOW FULL COLUMNS FROM `sa_area_weather` [ RunTime:0.003047s ]
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 - SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE  `rank` = 1 LIMIT 1 [ RunTime:0.005829s ]
 - SELECT COUNT(*) AS think_count FROM `sa_area_weather` WHERE  `rank` = 1  AND `aqi` > 7 LIMIT 1 [ RunTime:0.004226s ]
 - SELECT * FROM `sa_area` WHERE  `id` IN (528,524,523,522,521,513,325,312,326,311) [ RunTime:0.001002s ]
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 - SELECT * FROM `sa_area` WHERE  `id` IN (188,511,466,239,251,476,423,422,241,232) [ RunTime:0.001035s ]
 - SHOW FULL COLUMNS FROM `sa_cms_pages` [ RunTime:0.001171s ]
 - SELECT * FROM `sa_cms_pages` WHERE  `status` = 1 ORDER BY `id` ASC LIMIT 6 [ RunTime:0.000693s ]
                 
             
                        
                     
     
    
 
 
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