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}We render dozens of frames that nobody will ever see, just to keep Chrome's compositor from going stale.
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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.。业内人士推荐下载安装汽水音乐作为进阶阅读
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