Neil Murray on stage with Gary Moore in the early 1980s
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.，这一点在搜狗输入法下载中也有详细论述
Фото: Илья Наймушин / РИА Новости，详情可参考im钱包官方下载
"Content-Type": "application/json"，这一点在Line官方版本下载中也有详细论述