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overhead supply tank 高位槽
overhead line supply 架空电缆供电
overhead-line self-supply unit 架线自动供电装置
The firm said it continuously monitors track, signalling, overhead power supply and other equipment for ageing and degradation.
BBC: England
In electric trains, the braking energy is converted into electricity and fed back into the overhead power supply.
ECONOMIST: Tech.view: Boost for Formula One | The
There is huge supply overhead.
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