detector

中文： 检测仪

1. A device capable of registering a specific substance or physical phenomenon, and that optionally sounds an alarm or triggers a warning. · Smoke detectors are mandatory in public buildings.
2. An indicator showing the depth of the water in a boiler.
3. A galvanometer, usually portable, for indicating the direction of a current.
4. A device measuring radiation or electromagnetic waves.

复数 detectors