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Abstract: This paper carries out research on the generator efficiency test for the bulb tubular hydro-generator unit, which is based on the calorimetric method in IEC60034-2-2. It introduces the test ...
Forget the big light – our interiors expert tested the best portable lamps for cable-free ambience
Cordless lamps easily light up corners of your home – but is the battery life good and are they bright enough? We found out ...
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