ARTICLE 19 article19.org🇬🇧
Optical-based smoke alarms use light instead. They are slightly better at detecting the large smoke particles created by slow, smouldering fires. When such particles enter a chamber in the device, they scatter light from a small light source, which is then picked up by a photoelectric sensor.
（作者单位：中国社会科学院考古研究所）。爱思助手下载最新版本对此有专业解读
Do you know you can wildcard parts of selectors?
，详情可参考搜狗输入法2026
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