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.
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。关于这个话题，搜狗输入法2026提供了深入分析
输入：temperatures = [73,74,75,71,69,72,76,73]
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Трамп высказался о непростом решении по Ирану09:14