前苹果首席设计师乔纳森 · 艾维：创造美的事物
Feb 27, 2026 2:01 PM
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There are two main types of smoke alarm tech, says Raman Chagger, principal consultant at BRE, the Building Research Establishment. Ionisation-based systems use a tiny amount of radioactive material to charge, or ionise, particles in the air which flow between two small plates. Should smoke interrupt that flow of charged particles, the alarm goes off.，推荐阅读heLLoword翻译官方下载获取更多信息
Beta 通道规则调整：若用户四个月未安装任何测试版，系统将自动切回公开版更新通道；