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A comment on Cooling the tube – Engineering heat out of the Underground. Parent comment

Re:Cooling the tube – Engineering heat out of the Underground by mhb on Saturday June 24, 2017 @09:41AM (#14625539)
You're not wrong: However, that [regeneraative braking] can only work where trains are accelerating and braking at the same time, on the same electricity sub-station loop.
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