青云翻译

Smoke fire detector, is the world's more popular applications, a large number of fire detectors.

-Smoke detector, is the world's more popular and a fairly large number of fire detectors.

The feeling smoke type fire detector, is in the present world applies popularly, quantity many fire detector.

Smoke-type fire detector applications, which is the world a more accessible, a larger number of detector.

-Smoke detector, is the world's more popular and a fairly large number of fire detectors.