Полина Кислицына (Редактор)
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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放眼全国，小木耳变成大产业，小黄花成长为“致富花”……从南到北，从东到西，一个个“土特产”成为乡亲们增收致富的重要引擎，乡亲们的“金扁担”越挑越稳。
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当时，三星、SK海力士、美光三大存储巨头经历了有史以来最严重的需求下滑，被迫实施严格的减产和资本支出控制。这一轮产能收缩，为后来的涨价埋下了伏笔。