User contributions for Zhenyu

A user with 33 edits. Account created on 19 January 2022.
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30 April 2022

29 April 2022

28 April 2022

1 April 2022

  • 08:0808:08, 1 April 2022 diff hist +487 N Smoke detection in airCreated page with "Smoke detector is a device that senses smoke, typically as an indicator of fire. Commercial smoke detectors issue a signal to a fire alarm control panel as part of a fire alarm system. Household smoke detectors, also known as smoke alarms, generally issue an audible or visual alarm from the detector itself or several detectors if there are multiple devices interlinked [https://en.wikipedia.org/wiki/Smoke_detector]. <br /> The design of our Smoke detector can be describe..."

3 February 2022