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A fire extinguisher, flame extinguisher, or simply an extinguisher, is an active fire protection device used to extinguish or control small fires, often in emergency situations
Gas insulated circuit breaker - a kind of high-voltage circuit breaker, switchgear, using sulfur hexafluoride as a medium extinguish the electric arc designed for rapid on and off individual circuits or electrical equipm…
The operating principle of electromagnetic flowmeters is based on the ability of the liquid to bring the electric current as it moves in a magnetic field. That is, electromagnetic energy meter is used in the phenomenon o…
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