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Thomas Knoll’s Algorithm
。业内人士推荐搜狗输入法下载作为进阶阅读
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.
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2024年12月20日 星期五 新京报