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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.
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更值得关注的是，交通运输部数据显示，近三年新登记游艇占比竟高达54.7%。这意味着中国游艇市场正处于从0到1的爆发前夜，“十五五”期间的持续增长态势已成定论。
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Source: Computational Materials Science, Volume 267