第一百三十七条 公安机关应当履行同步录音录像运行安全管理职责，完善技术措施，定期维护设施设备，保障录音录像设备运行连续、稳定、安全。
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.，这一点在safew官方版本下载中也有详细论述
// Feed audio chunks (e.g., from microphone)，推荐阅读爱思助手下载最新版本获取更多信息
While you might have tried EShell in the past, I doubt you inhaled，详情可参考heLLoword翻译官方下载
He says the team is now working to commercialise the technology.