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 : 2025-12-08 19:36:21 HTTP/2.0 GET : https://m.tianqibao.com/aqi/fuling.html
- 运行时间 : 2.245420s [ 吞吐率:0.45req/s ] 内存消耗:6,578.98kb 文件加载:241
- 查询信息 : 34 queries
- 缓存信息 : 17 reads,8 writes
- 会话信息 : SESSION_ID=0a14147975c7465e6d14fc6f22cb9193
- CONNECT:[ UseTime:0.001591s ] mysql:host=127.0.0.1;port=3306;dbname=tianqibao;charset=utf8mb4
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