在苹果的这套 AI 新硬件体系中，三款硬件分工明确：
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The halftone or ‘clustered-dot’ matrix uses a dot pattern reminiscent of traditional photographic halftoning. Here a diagonal variant of the pattern is given:
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.
What's the difference between a wifi booster and extender?