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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他說，如果法院限制他徵收這些關稅的能力，那將是「經濟與國家安全的災難」。，这一点在搜狗输入法2026中也有详细论述